Chocolate Cake With Chocolate Buttercream Food

CHOCOLATE CAKE WITH CHOCOLATE BUTTERCREAM

Steps:

• Preheat the oven to 350°F. Spray three 8-inch cake pans with non-stick spray and line with parchment paper. (See the notes if you want to bake a different sized cake).
• In a large mixing bowl, add the cocoa powder and boiling water or coffee. Whisk the chocolate mixture until smooth.
• Add the sugar, vegetable oil, and sour cream and whisk until well blended.
• Add the eggs and vanilla extract and whisk until the eggs are completely incorporated.
• Sift the flour baking powder, baking soda, and salt over the batter. Whisk until there are no flour streaks.
• Divide the batter among the baking pans and bake for 28 to 35 minutes. (See the notes if you use different sized pans).
• Let the cakes cool for 5 to 10 minutes in the pans then run a knife around the edge of the pans to loosen the cake. Invert the cakes onto a cooling rack and let them cool completely before frosting them.
• Place the butter in a mixing bowl and beat on medium speed for a couple of minutes until it is smooth and creamy.
• Add 6 cups of the powdered sugar a cup at a time. Add the cocoa powder slowly and blend on medium speed until incorporated.
• Add 4 tablespoons of the milk (or cream), salt, and vanilla extract. Increase the speed and beat for 2 to 3 minutes.
• Stop the beater and check the consistency of the buttercream. Add additional powdered sugar if it is too thin or add 16extra milk if it is too thick.

CHOCOLATE BUTTERCREAM CAKE (INA GARTEN)

Steps:

• Preheat the oven to 350°F Butter two 8-inch round cake pans. Line the bottoms with parchment paper, butter the paper, and dust the pans with flour, knocking out any excess. In a medium bowl, sift together the flour, cocoa, baking soda and salt.
• In the bowl of an electric mixer fitted with the paddle attachment, cream the butter and sugars on high speed until light, approximately 5 minutes. Add the eggs and vanilla and mix well. Combine the buttermilk, sour cream, and coffee. On low speed, add the flour mixture and the buttermilk mixture alternately in thirds, beginning with the buttermilk mixture and ending with the flour mixture. Mix the batter only until blended.
• Divide the batter between the two pans and smooth the tops with a spatula. Bake on the middle rack of the oven for 25-30 minutes or until a toothpick comes out clean. Cool for 10 minutes on a rack, remove from the pans, and allow to finish cooling.
• To make the frosting, chop the chocolates and melt in a bowl over simmering water until smooth. Allow to cool.
• Mix the egg whites, sugar, cream of tartar and salt in the bowl of an electric mixer fitted with a whisk. Heat the egg whites in the bowl over simmering water until they are warm to the touch, about 5 minutes. Whisk on high speed for 5 minutes or until the meringue is cool and holds a stiff peak.
• Add the butter, 1 tablespoons at a time, while beating on medium speed. Scrape down the bowl, add the chocolate, vanilla, and espresso and mix for 1 minute or until the chocolate is completely blended inches If the buttercream seems very soft, allow it to cool and beat it again.
• To frost the cake, place one cake layer on a serving plate, flat side up. Frost the top of that layer with buttercream. Place the second layer on top, also flat side up and frost the top and sides.

BIRTHDAY CAKE WITH CHOCOLATE BUTTERCREAM

Steps:

• Preheat the oven to 350°F (180°C). Line the bottoms of two 9-by-2-inch (23-by-5cm) round cake pans with parchment (baking) paper.
• Sift the flour, baking powder, and salt together onto a sheet of waxed paper; set aside.
• In a small bowl, combine the milk and vanilla; set aside.
• Using a stand mixer, beat the butter with the paddle on medium speed until creamy. Add sugar and beat until mixture is pale and fluffy. Drizzle in the eggs beating each addition until incorporated before continuing (Stop frequently to let the batter absorb the egg. If the batter begins to look curdled , increase the mixer speed to high and beat until batter looks smooth again). Reduce the speed to medium low and add the dry ingredients in 3 additions alternately with the milk mixture in 2 additions, starting and ending with dry ingredients. Beat just until combined.
• Pour the batter into prepared pans and spread it evenly. Bake until the cakes are puffed and a skewer inserted into the centers comes out clean, 20-25 minutes. Let cool completely on a wire rack. Run a table knife around the edges of the pans and invert the cakes unto plates.
• To make the frosting, chop the chocolate into small pieces and put it in a stainless-steel bowl. Set the bowl in a saucepan over, but not touching, barely simmering water. Heat until the chocolate melts, stirring occasionally. Do not allow any water or steam to come in contact with the chocolate, or it will become stiff and grainy. Or, chop the chocolate in large pieces, place in a microwave-safe dish, and microwave on low for 1 minute. Continue to microwave if necessary, checking every 20 seconds, until the chocolate looks softened, then stir until smooth and liquid.
• Using a stand mixer, beat the butter with the paddle on medium speed until it is the consistency of mayonnaise. It should not be melted. Transfer to another bowl and thoroughly wash and dry the mixer bowl.
• In a saucepan over medium heat, heat the milk and 1/4 cup (2 oz./60 g) of the sugar, stirring occasionally, until small bubbles appear along the edge of the pan.
• Using the stand mixer, beat the egg yolks and the remaining 1/2 cup (4 oz./100 g) sugar with the whisk on medium-high speed until the mixture is pale and thick, about 3 minutes. Reduce the speed to low and pour in the hot milk mixture in a thin stream. Return the mixture to the saucepan. Thoroughly wash and dry the mixer bowl and whisk.
• Cook over medium heat, whisking constantly until it registers 170°F (77°C) on an instant read thermometer 5-7 minutes. Pour the mixture back into the mixer bowl and heat with the whisk on medium speed until cool, 5-10 minutes. Beat in the melted chocolate. Add the butter in 4 additions, incorporating each addition before adding another.
• To frost the cake, put one layer, top side down, on a serving plate (To protect the plate, place paper strips under and along the edges of the bottom layer.). Peel off the parchment paper. Using a straight frosting spatula, spread evenly with about one third of the buttercream. Invert the other layer, top side down, on the first layer peel off the paper. Refrigerate the cake 30 minutes to firm the frosting; keep the remaining buttercream at room temperature. Spread the buttercream on the top and sides cake (Put the frosting in the center of the top of the cake and smooth it evenly. The frosting will cover the top in a thick layer. Evenly smooth the frosting from the top of the cake down the sides, turning the cake as you work. As you cover the side, hold the spatula almost perpendicular to the top of the cake. Holding the spatula almost horizontal to the cake's top, smooth the top with long strokes. Then run the spatula around the sides, making the frosting as smooth as possible. Using short strokes, remove excess frosting from the edge of the top. Discard the waxed paper strips.).
• Refrigerate the cake until 30 minutes before serving to set the frosting.

CHOCOLATE CAKE WITH MALTED CHOCOLATE BUTTERCREAM

Steps:

• For the cake: Position a rack in the center of the oven and preheat the oven to 350 degrees F. Coat two 8-inch-round cake pans with cooking spray and line the bottoms with parchment paper rounds.
• Sift the flour, cocoa powder, baking powder, baking soda and salt into a medium bowl and set aside.
• In a small bowl, combine the hot coffee and semisweet chocolate. Allow the coffee to melt the chocolate, then cool the mixture to warm, not hot. Stir to blend the chocolate into the coffee. Add the buttermilk and vanilla and stir again. Set aside.
• Whisk together the oil, eggs and egg yolk in the bowl of a stand mixer on medium high, about 1 minute. Reduce the speed to low and add the coffee mixture. Gradually add the flour mixture and mix on low until well blended, about 1 minute. Give the batter a 20-second burst on medium-high speed.
• Divide the batter evenly among the prepared pans and bake on the center rack until a toothpick inserted into the centers of the cakes comes out clean, 35 to 40 minutes. Allow to cool for about 30 minutes in the pans, then remove from the pans and cool completely on a wire rack. Carefully double-wrap the cooled cakes in plastic wrap and refrigerate 2 to 3 hours or until you are ready to decorate.
• For the buttercream: Place the malted milk balls in a resealable bag and seal. Break the candies into small chunks with the back of a spoon and set aside.
• Beat the butter in the bowl of a stand mixer on medium speed until nice and smooth, about 1 minute. On low speed, gradually add the confectioners' sugar until fully incorporated. Add the malted milk powder, vanilla and salt. Beat on medium speed until well combined, 2 minutes. (For a firmer buttercream, add a little more confectioners' sugar. For a softer buttercream, add a little water a tablespoon at a time until it reaches the desired consistency.) In a small bowl, mix a quarter of the buttercream with the crushed malted milk balls. Store in airtight containers until ready to use.
• To assemble the cake: Remove the plastic wrap from the cakes. Using a long serrated knife, carefully cut off the domed sections of each layer of cake. (Discard the scraps or give to eager family and friends.) Place one layer of the cake on a plate or disposable cardboard cake circle. Using a medium-size offset spatula, spread about a 1/2-inch layer of the buttercream with candy pieces onto the top of the cake layer, leaving about half an inch of space between the buttercream and the edge of the cake. Carefully place the other layer on top of the one with the candy buttercream. Using the plain buttercream (without candy pieces), spread a thin layer of buttercream all the way around the entire cake. Chill the cake for about 30 minutes. This will act as a crumb coat and lock in all of the loose crumbs before adding the final layer of icing. Remove the cake from the refrigerator and, using your spatula, spread another layer of buttercream on the sides and top of the cake. Crush additional malted milk candies and sprinkle on top of the cake.

TIERED CHOCOLATE BUTTERCREAM CAKE

Steps:

• Preheat the oven to 350 degrees F.
• Butter 1 (4 by 3-inch) cake pan, 1 (6 by 3-inch) cake pan and 1 (8 by 3-inch) cake pan. Line the bottoms with parchment paper, and butter and flour the pans.
• Sift the flour, cocoa, baking soda, and salt together in a medium bowl.
• In the bowl of an electric mixer fitted with a paddle attachment, cream the butter and sugars on high speed until light, approximately 5 minutes. Add the eggs and vanilla and mix well. Combine the buttermilk, sour cream, and coffee. On low speed, add the flour mixture and the buttermilk mixture alternately in thirds, beginning with the buttermilk mixture and ending with the flour mixture. Mix the batter only until blended.
• Divide the batter between the 3 pans and smooth the tops with a spatula. Bake on the middle rack of the oven as follows: for the 4-inch pan 45 to 50 minutes, or until a toothpick comes out clean; for the 6-inch pan 70 to 75 minutes, or until a toothpick comes out clean; and for the 8-inch pan 85 to 90 minutes, or until a toothpick comes out clean. Cool the cakes in the pans for 10 minutes each on a cooling rack, carefully remove from the pans and allow to finish cooling.
• Place the 8-inch cake on a serving plate, flat side up. Frost the top of that layer with buttercream. Place the 6-inch cake in the center of the top of the 8-inch cake, flat-side up, and frost the top and sides. Place the 4-inch cake in the center of the top of the 6-inch cake, flat side down. Frost the top and sides of that layer with buttercream. Spread any remaining buttercream over the cake evenly.
• Chop the chocolates and place them in a heat-proof bowl set over a pan simmering water. Stir until melted and set aside until cooled to room temperature.
• Mix the egg whites, sugar, cream of tartar, and salt in the bowl of an electric mixer fitted with a whisk attachment. Place the bowl of egg whites over the pan of simmering water and heat the egg whites until they are warm to the touch, about 5 minutes. Return the bowl to the electric mixer and whisk on high speed for 5 minutes, or until the meringue is cool and holds a stiff peak.
• Add the butter, 1 tablespoon at a time, while beating on medium speed. Scrape down the bowl, add the melted chocolate, vanilla, espresso, and rum, if using, and mix for 1 minute or until the chocolate is completely blended in. If the buttercream seems very soft, allow it to cool, and beat it again.

CHOCOLATE CAKE WITH RASPBERRY BUTTERCREAM

Steps:

• For the cake: Preheat the oven to 350 degrees F. Grease two 9-by-2-inch round cake pans; dust the pans with flour, and knock out excess.
• In a large measuring cup, combine the buttermilk, coffee, vanilla and 1 1/2 cups water. In a stand mixer fitted with the paddle attachment, add the sugar, flour, cocoa powder, baking powder, baking soda and salt. Mix on low speed. Mix in the butter and eggs, and then slowly add the buttermilk mixture, scraping down the sides of the bowl as needed.
• Divide the batter evenly between the prepared cake pans. Bake until the cake layers begin to pull away from sides of the pan and a toothpick inserted into center comes out clean, 22 to 25 minutes.
• For the Swiss meringue buttercream: Add the sugar and egg whites to a heatproof stand mixer bowl, and set over a pan of simmering water. Whisking constantly, heat until the sugar is dissolved and the mixture registers 160 degrees F on an instant-read thermometer. Transfer the bowl to the stand mixer fitted with the whisk attachment, and beat on medium-high speed until fluffy and cooled, about 10 minutes. Continue beating until stiff, glossy peaks form. Reduce the speed to medium-low and add the butter, 1 tablespoon at a time, beating well after each addition. Add the vanilla. (Makes 7 cups. See Cook's Note.)
• For the raspberry buttercream: In a stand mixer fitted with paddle attachment, beat 800 grams of the Swiss meringue buttercream together with the raspberry puree until fully incorporated. (Makes 4 cups.)
• To assemble: Level and tort both cakes--you will end up with 4 layers of cake. Place one cake layer on a serving platter; add about a 1/2-inch layer of the raspberry buttercream. Repeat until you have 4 stacked layers of cake and 3 layers of filling. Frost the cake with the remaining Swiss meringue buttercream.

CHOCOLATE BUTTERCREAM CAKE

Steps:

• Preheat the oven to 350 degrees F. Butter and flour a 12 by 18 by 1 1/2-inch sheet pan.
• In a medium bowl, sift together the flour, cocoa, baking soda, and salt.
• In the bowl of an electric mixer fitted with a paddle attachment, cream the butter and sugars on high speed until light, approximately 5 minutes. Add the eggs and vanilla and mix well. Combine the buttermilk, sour cream, and coffee. On low speed, add the flour mixture and the buttermilk mixture alternately in thirds, beginning with the buttermilk mixture and ending with the flour mixture. Mix the batter only until blended.
• Pour the batter into the prepared sheet pan, smooth the top with a spatula, and bake in the center of the oven for 25 to 30 minutes, or until a toothpick comes out clean. Cool to room temperature before frosting.
• 2 cups sugar
• 2/3 cup water
• 6 extra-large egg whites, at room temperature
• 1/4 teaspoon cream of tartar
• 1 1/4 pounds (5 sticks) unsalted butter, at room temperature
• 2 teaspoons pure vanilla extract
• 3 tablespoons Triple Sec or other orange liqueur
• 1 tablespoon orange food coloring
• Combine the sugar with 2/3 cup water in a medium heavy-bottomed saucepan and, without stirring, bring to a boil. Cover the saucepan and allow the mixture to boil until the sugar dissolves. Uncover and continue boiling until the mixture reaches 240 degrees F on a candy thermometer. Pour the syrup into a heat-proof measuring cup.
• Place the egg whites and cream of tartar in the bowl of an electric mixer fitted with the whisk attachment and beat on high speed until the eggs form stiff peaks. With the mixer on high speed, slowly pour the syrup into the egg whites. Continue beating on high speed until the mixture is absolutely at room temperature, about 10 to 15 minutes.
• With the mixer on medium speed, add the butter, 1 tablespoon at a time, and then add the vanilla and liqueur. (If the mixture becomes runny, the meringue was too warm and the butter melted. Chill slightly and beat again.) Add the food coloring and combine.
• Yield: 6 cups

CHOCOLATE CAKE WITH AMERICAN BUTTERCREAM FROSTING

Steps:

• Preheat the oven to 350 degrees F and grease and flour two 9-inch round cake pans.
• In a big bowl, mix the flour, sugar, baking soda, and salt.
• In a medium saucepan over medium heat, melt the butter. Whisk in the coffee, cocoa powder, and 1/2 cup water and heat it for a minute, stirring constantly. Pour the melted butter mixture into the flour mixture and whisk until well combined.
• In a medium bowl, whisk the eggs, buttermilk, and vanilla. Add it to the batter and mix until smooth.
• Divide the batter between the two cake pans, scraping all the batter from the bowl with a rubber spatula. Bake for about 40 minutes, or until a toothpick inserted into the center comes out clean. Let cool for 15 minutes in the pans and then turn out onto a wire rack to cool completely.
• Frost with buttercream frosting
• In the bowl of a stand mixer fitted with the whisk attachment, combine all the ingredients. Whip the mixture on low speed for a while. When the sugar is incorporated, turn the mixer speed up and whip until the buttercream is smooth and looks right to you. If it's too cold, persuade it with a blowtorch if you have one. If it's too wet, add a bit more powdered sugar. If it's too stiff, add a bit more butter. Be sure to scrape the sides of the bowl once or twice to make sure everything is combined.
• Use immediately or store in an airtight container at room temperature for 24 hours or in the fridge for up to 2 weeks. Rewhip cold buttercream before using it.
• Variation: The water/coffee combo in this recipe can be switched up, but remember, coffee is to chocolate like salt is to beef. Coffee brings out the flavor of chocolate without making it taste like coffee, just as salt brings out the flavor of meat without making it taste salty. The liquid you use can be all water, or it can be a full cup of coffee for more of a mocha-flavored cake. And if you're feeling really bold, go ahead and use a cup of a dark stout beer instead. Get creative and experiment a little - after all, it is a science project.

CHOCOLATE CAKE WITH VANILLA BUTTERCREAM

Steps:

• Make cake layers:
• Put oven rack in middle position and preheat oven to 350°F. Butter 2 (9- by 2-inch) round cake pans and line bottom of each with a round of wax paper. Butter paper and dust pans with flour, knocking out excess.
• Whisk together hot water and cocoa powder in a bowl until smooth, then whisk in milk and vanilla.
• Whisk together flour, baking soda, and salt in another bowl.
• Beat together butter and brown sugar in a large bowl with an electric mixer at medium-high speed until pale and fluffy, 3 to 5 minutes. Add eggs 1 at a time, beating well after each addition. Reduce speed to low and add flour and cocoa mixtures alternately in batches, beginning and ending with flour mixture (batter may look curdled).
• Divide batter between cake pans, smoothing tops. Bake until a wooden pick or skewer comes out clean and edges of cake begin to pull away from sides of pans, 25 to 35 minutes total. Cool layers in pans on racks 10 minutes, then invert onto racks, removing wax paper, and cool completely.
• Assemble cake:
• Put 1 cake layer, rounded side up, on a cake stand or platter and, using offset spatula, spread top with about 1 cup buttercream. Top with remaining cake layer, rounded side down, and frost side and top of cake with 2 cups buttercream.
• Decorate cake:
• For each color (you can make up to 5), transfer 3 tablespoons buttercream to a separate small bowl and tint with food coloring. Snip off 1 corner of each plastic bag to create a 1/4-inch opening, then spoon each color of buttercream into a bag, pressing out excess air. Twist each bag firmly just above buttercream, then decoratively pipe colored buttercream onto cake. Chill cake until buttercream is set, about 30 minutes.
• Just before serving, arrange 6 to 8 mini cupcakes on top of cake in 1 layer, then stack remaining mini cupcakes on top.
• *Wilton Paste Food Coloring available at wilton.com.

EASY CHOCOLATE CAKE

Steps:

• Heat oven to 190C/170C fan/gas 5. Butter the base and sides of two 20cm round sandwich tins and line the bases with baking parchment.
• In a large bowl, beat together 200g golden caster sugar, 200g softened unsalted butter, 4 large eggs, 200g self-raising flour, 2 tbsp cocoa powder, 1 tsp baking powder, ½ tsp vanilla extract, 2 tbsp milk and a pinch of salt until pale.
• Divide the mixture between the prepared tins. Bake for 20 mins or until a skewer inserted into the centre of the cake comes out clean.
• Leave to cool in the tin for 10 mins, then turn out onto a wire rack to cool completely.
• For the buttercream, put 100g chopped milk chocolate in a heatproof bowl and melt in the microwave, stirring every 30 secs. Leave the melted chocolate to cool for 5 mins.
• Mash 200g softened butter and 400g icing sugar together with a fork, then switch to a wooden spoon or electric beaters, if you have them.
• Sift in 5 tbsp cocoa powder with a pinch of salt and pour in the melted chocolate and 2 tbsp milk. Mix again until smooth.
• On a cake stand or large plate, sandwich the cakes together with half of the buttercream, then spread the rest on top. Decorate with chocolate shards, if you like.
• To make chocolate shards: melt 50g dark chocolate and pour it onto a tray lined with baking parchment or foil.
• Now melt 25g milk chocolate and 25g white chocolate and drizzle them over the dark chocolate before it sets.
• Shake the tray gently to level the mixture then leave to set somewhere cool. Chop into shards.

FRENCH CHOCOLATE BUTTERCREAM CAKE

Steps:

• Place oven rack in centre of oven, heat to 350°F.
• Butter and flour bottoms of 2- 8 inch round cake pans, reserve.
• Beat eggs in large mixer bowl at high speed 1 minute.
• Continue beating, adding sugar very slowly, about 7 minutes.
• Melt chocolate with 3/4 cup butter.
• Drizzle warm chocolate mixture into egg mixture, beating at low speed until blended.
• Add sour cream and vanilla, beat at low speed until thoroughly blended.
• Sift together 1 1/2 cups flour, the cocoa and baking soda.
• While beating at low speed, add dry ingredients, about 1/2 cup at a time, to chocolate mixture alternating with milk, about 1/3 cup at a time.
• Stop mixer as necessary to clean sides of bowl with rubber spatula.
• Beat until well blended.
• Pour half of batter into each reserved pan, place pans in oven diagonally on same rack.
• Bake until cake tester or wooden pick inserted in centre of each cake comes out clean, 30 to 35 minutes.
• Cool cakes in pans on wire racks until just warm, remove from pans and cool completely on racks.
• Prepare Chocolate Buttercream.
• Reserve about 1/2 cup buttercream for decorative piping.
• To assemble cake, place 1 layer on serving plate, spread top evenly with 3/4 of the firm buttercream.
• Refrigerate 30 minutes.
• Place second cake layer on top of first layer.
• Frost sides, then top of cake completely with buttercream.
• Pipe reserved buttercream through pastry bag fitted with star tube in a decorative border around top of cake.
• Refrigerate cake until thoroughly chilled, serve cold.
• Cake must be stored in refrigerator.

PERFECT CHOCOLATE CAKE

Steps:

• Preheat oven to 350 degrees F (175 degrees C). Grease and flour three 9 inch round cake pans. Stir together the cocoa and boiling water from the first set of ingredients. Set aside to cool. Sift together the flour, baking soda, salt and baking powder, set aside.
• In a large bowl, cream together the butter and sugar. Beat in the eggs, one at a time, then stir in the vanilla. Add the dry ingredients alternately with the cocoa mixture. Mix only until combined. Divide evenly between the three prepared pans, and spread the batter out flat.
• Bake for 18 to 22 minutes in the preheated oven, until a toothpick inserted comes out clean, and the cake pulls away from the sides of the pan. Cool cakes on a wire rack.
• In a medium bowl, whip the heavy cream and vanilla. When the cream becomes thick, add the confectioners' sugar and continue to whip until stiff but not too grainy. Divide into three parts and spread onto two of the cooled layers. Stack the layers onto a nice plate, putting the two creamed ones on the bottom. Place the plain layer on the top. If there is a hump on the top of the cake, trim it off with a long serrated knife. Frost the sides with the chocolate buttercream frosting.
• To make the frosting, beat the remaining ingredients, butter, confectioners' sugar, vanilla and cocoa until light and fluffy, about 7 to 10 minutes. Frost sides of the cake, leaving a ridge that sticks up over the top edge. Spread the remaining cream filling over the top of the cake. Garnish with sprinkles, chocolate curls or seasonal fresh fruit.

EXTREME CHOCOLATE CAKE

Steps:

• Preheat oven to 350 degrees F (175 degrees C). Grease and flour two 9 inch cake pans.
• Use the first set of ingredients to make the cake. In a medium bowl, stir together the sugar, flour, cocoa, baking soda, baking powder and salt. Add the eggs, milk, oil and vanilla, mix for 3 minutes with an electric mixer. Stir in the boiling water by hand. Pour evenly into the two prepared pans.
• Bake for 30 to 35 minutes in the preheated oven, until a toothpick inserted comes out clean. Cool for 10 minutes before removing from pans to cool completely.
• To make the frosting, use the second set of ingredients. Cream butter until light and fluffy. Stir in the cocoa and confectioners' sugar alternately with the milk and vanilla. Beat to a spreading consistency.
• Split the layers of cooled cake horizontally, cover the top of each layer with frosting, then stack them onto a serving plate. Frost the outside of the cake.

CHOCOLATE SHEET CAKE WITH VANILLA BUTTERCREAM

Steps:

• Preheat oven to 350 degrees. Butter a 9-by-13-inch baking pan. Line bottom with parchment; butter parchment. Stir together boiling water, cocoa, and chocolate; let cool 10 minutes. Meanwhile, whisk together flour, baking powder, baking soda, and salt in another bowl.
• Beat butter with sugar on medium-high speed until fluffy, 2 to 3 minutes. Beat in eggs, one at a time, beating to combine after each addition and scraping down sides of bowl as needed. Beat in vanilla, then chocolate mixture. Reduce speed to low; beat in flour mixture in two batches, alternating with sour cream, until just combined. Scrape batter into prepared pan, smoothing top with an offset spatula.
• Bake until a tester inserted in center comes out with a few moist crumbs, 35 to 40 minutes (top will not spring back). Let cool in pan 10 minutes. Invert onto a wire rack and remove parchment; let cool completely. Cake can be made up to 1 day ahead and stored at room temperature, wrapped in plastic.
• Spread buttercream evenly over top and sides of cake. Sprinkle with chocolate curls. (Leftovers can be refrigerated, wrapped in plastic, up to 3 days; return to room temperature before serving.)

DEVIL'S FOOD CAKE WITH CHOCOLATE MOUSSE BUTTERCREAM

Steps:

• Cake:.
• In a large bowl, combine the cocoa powder, espresso powder, and chocolate.
• Pour in the boiling water and stir until the chocolate is melted and the mixture is smooth.
• Stir in the vanilla and let cool; then stir in the buttermilk.
• In another bowl, using an electric mixer set at medium speed, beat the butter and oil together until light and fluffy.
• Add the sugars and beat until creamy.
• Beat in the eggs, one at a time, beating well after each addition.
• Sift together the flour, baking soda, and salt onto a sheet of waxed paper.
• Add one-third of the flour mixture and beat at low just until combined.
• Beat in half of the chocolate-buttermilk mixture just until combined.
• Scrape down the sides of the bowl with a rubber spatula.
• Beat in another one-third of the remaining flour mixture for no more than a few seconds, just until combined.
• Add the remaining chocolate-buttermilk mixture, beating just a few seconds.
• Finally, fold in the remaining one-third of the flour mixture by hand, using a large rubber spatula, just until no streaks of flour remain.
• Divide the batter between two 9-inch round cake pans that have been greased and lined with parchment.
• Bake at 350°F 25-30 minutes, or until a wooden skewer inserted in the center comes out clean.
• Transfer to wire racks and let cool 5-10 minutes.
• Invert the cakes onto the racks and peel the parchment paper from the layers.
• Let cool completely before frosting.
• Halve each cake layer horizontally using a long serrated knife (plain dental floss works for me) for a total of four thin cake layers.
• Place one layer cut-side up on a serving plate and top with 1 cup of the mousse buttercream, spreading it evenly.
• Continue stacking the cake, spreading 1 cup of the buttercream in between each layer and placing the layer cut-side down.
• Frost the top and sides of the cake with the remaining buttercream.
• Chocolate Mousse Buttercream:.
• Whisk together the eggs, sugar, and cocoa powder in the metal bowl of a stand mixer.
• Fill a large saute pan or skillet with water and bring to a simmer over mediium-high heat.
• Place the mixing bowl in the simmering water and whisk the egg mixture constantly until the sugar is completely dissolved and the mixture is thick, fluffy, and very hot, 3-4 minutes.
• Use an instant-read thermometer to check the temperature of the mixture -- it should be anywhere between 120-140°F.
• Remove the bowl from the simmering water and, using the whisk attachment, beat the eggs at medium-high speed until they are tripled in volume and form soft peaks and the bottom of the bowl is completely cool to the touch, about 10 minutes (it took 45 minutes with a hand mixer -- don't try it!).
• Beat in the vanilla and salt.
• While the eggs are mixing, unwrap the individual sticks of butter and rewrap them loosely in plastic wrap.
• Pound the butter 5-6 times with a rolling pin, until it is soft and malleable but still cool.
• With the mixer speed still on med-high, add the butter 2 T at a time, to the egg mixture, beating in each addition until it is incorporated.
• Don't panic if it seems liquidy or looks curdled; it will magically emulsify.
• When the buttercream is smooth and glossy with a subtle brown tint from the cocoa powder, turn off the mixer and carefully fold in the melted chocolate.

THE BEST CHOCOLATE CAKE WITH EGG YOLK BUTTERCREAM

Steps:

• Preheat the oven to 350 degrees F. Butter 2 (8-inch) round cake pans. Line with parchment paper, then butter and flour the pans.
• Sift the flour, sugar, cocoa, baking soda, baking powder, and salt into the bowl of an electric mixer fitted with a paddle attachment and mix on low speed until combined. In another bowl, combine the buttermilk, oil, eggs, and vanilla. With the mixer on low speed, slowly add the wet ingredients to the dry. With mixer still on low, add the coffee and stir just to combine, scraping the bottom of the bowl with a rubber spatula. Pour the batter into the prepared pans and bake for 35 to 40 minutes, until a cake tester comes out clean. Cool in the pans for 30 minutes, then turn them out onto a cooling rack and cool completely.
• Place 1 layer, flat side up, on a flat plate or cake pedestal. With a knife or offset spatula, spread the top with frosting. Place the second layer on top, rounded side up, and spread the frosting evenly on the top and sides of the cake.

CHOCOLATE LOVER'S CAKE WITH CHOCOLATE BUTTERCREAM ICING

Steps:

• Preheat oven to 350 degrees F (175 degrees C). Grease three 9-inch round baking pans.
• Combine 8 ounces baking chocolate and 2 tablespoons cream in a saucepan over low heat; cook and stir until chocolate is melted, about 5 minutes. Set aside to cool.
• Beat 1 cup butter, white sugar, and brown sugar together in a bowl using an electric mixer until creamy; mix in sour cream, 1 cup coffee, eggs, and vanilla extract. Slowly beat in melted chocolate mixture until combined.
• Mix flour, baking soda, baking powder, and salt together in a bowl; beat flour mixture into butter mixture until well combined and smooth. Pour batter into the 3 prepared baking pans.
• Bake in the preheated oven until a toothpick inserted in the center of a cake comes out clean, 20 to 30 minutes. Cool in the pans for 10 minutes before removing to cool completely on a wire rack.
• Heat 1/2 cup cream and 4 ounces baking chocolate together in a saucepan over medium heat, stirring constantly, until chocolate is melted, about 5 minutes. Remove saucepan from heat and stir in 1/3 cup coffee. Refrigerate mixture until completely cooled, about 30 minutes.
• Beat confectioners' sugar and 1 cup butter into cooled chocolate mixture in a large bowl until fluffy; add more confectioners' sugar until desired consistency is reached.
• Place 1 cake on a serving platter; spread icing on top of cake. Repeat layering with remaining cake and icing; spread icing on top and sides of entire layered cake.