Roberta Heart Food

ROBERTA HEART

Steps:

• Preheat oven to 350 degrees with rack set in lower third of oven. Butter a 10-by-2-inch heart-shaped pan. Line bottom and sides with parchment paper; set aside.
• In a small bowl, combine the espresso and water. Stir to dissolve. In a heatproof bowl, combine the chocolates, espresso mixture, and rum over a saucepan of simmer water. Stir until smooth. Remove, and set aside.
• Over the same saucepan of simmering water, combine the eggs and granulated sugar in a large heatproof bowl. Beat, using a handheld electric mixer, until thick, fluffy, and almost tripled in volume.
• Whip the cream in a chilled bowl until soft peaks form. Add the confectioners' sugar and vanilla.
• Fold the melted-chocolate mixture into the egg mixture. Gently fold in the whipped cream. Transfer to prepared pan. Place a large roasting pan in the oven, and fill 1 inch with boiling water. Immediately set the heart pan in the roasting pan. Bake until a toothpick inserted in the center comes out clean, about 1 hour.
• Remove from oven, and let cool in the water bath. When cool, cover, and refrigerate overnight.
• Just before serving, uncover the pan, and warm slightly in an inch of warm water to loosen from pan. Invert onto a platter. Pipe the sweetened whipped cream onto the chocolate heart with a decorative tip, if desired.

VANILLA HEART-SHAPED CAKE WITH RASPBERRY-AND-CUSTARD-FILLING

Steps:

• Preheat oven to 325°F. Spread coconut in a single layer on a rimmed baking sheet and bake until dry but not browning, about 5 minutes. Remove from oven and let cool completely on sheet.
• Increase oven temperature to 350°F. Butter a 10-by-2-inch heart-shaped cake pan (see cook's note for product link). Line bottom with parchment, butter parchment, and dust with flour, tapping out excess. Stir together flour, baking powder, and salt. In a heatproof bowl set over (but not in) a pot of simmering water, whisk together eggs, sugar, and vanilla seeds until sugar has dissolved and mixture is warm. Remove from pot and beat on high speed until thick and pale, about 4 minutes. Add flour mixture; whisk just to combine. Add butter; whisk to combine. Add crème fraîche, milk, and vanilla extract; whisk to combine.
• Scrape batter into prepared pan, smooth top, and bake until top springs back when lightly touched and a tester inserted in center comes out clean, 30 to 35 minutes. Let cool in pan on a wire rack 10 minutes, then invert onto rack, remove parchment, and let cool completely. Cake can be made ahead to this point, wrapped in plastic, and stored at room temperature up to 1 day.
• Whisk pastry cream to lighten, then whisk heavy cream to stiff peaks. Fold whipped cream into pastry cream. Using a serrated knife, split cake in half horizontally. Use a 4 1/2-to-5-inch heart-shaped cutter to cut out center of bottom layer. Spread a thin layer of cream mixture (about 1 cup) over other (uncut) layer, then arrange about 2 3/4 cups berries over cream, covering entire layer.
• Dollop about 1 1/2 cups more cream mixture over berries, spreading with an offset spatula to cover. Place cut-out layer on top, bottom-side up. Fill heart-shaped hollow with remaining cream mixture. Refrigerate at least 2 hours or, covered, up to 24 hours.
• Frost top and sides of cake with crème-fraîche whipped cream. Sprinkle border with coconut. Arrange remaining 1 1/4 cups berries over cream mixture in heart-shaped hollow. Refrigerate at least 1 hour or, covered, up to 8 hours.

CHOCOLATE HEART-SHAPED CAKES WITH BUTTERCREAM

Steps:

• Preheat oven to 300°F. Spray the hollows of a 5-cup heart-shaped nonstick cake pan or an 8-cup silicone mold with cooking spray (see cook's note for product links). If not using silicone mold, line bottoms with parchment.
• In a medium heatproof bowl, dissolve espresso in hot water. Add chocolate and rum and place over (but not in) a pot of simmering water. Stir until chocolate has melted and mixture is smooth. Remove from heat; let cool slightly.
• In a heatproof bowl, combine eggs and granulated sugar. Place over (but not in) pot of simmering water and whisk until sugar has dissolved and mixture is warm to the touch. Transfer to a mixer fitted with the whisk attachment and beat on medium-high speed until mixture is thick, fluffy, and almost doubled in volume, about 3 minutes (or, if not using a stand mixer, you can beat with a hand mixer directly over the heat).
• Whisk cream with confectioners' sugar and vanilla until soft peaks form. Fold chocolate mixture into egg mixture, then gently but thoroughly fold in whipped cream.
• Divide mixture among hollows of prepared pan (about 1/2 cup per hollow for 5-cup; about 1/3 cup for 8-cup). Place filled pan in a large roasting pan on middle rack of oven. Add boiling water to roasting pan to come halfway up sides of cake pan. Bake until a tester inserted in centers comes out clean, 40 to 50 minutes.
• Remove from oven and let cool completely in water bath. Remove from water, cover, and refrigerate at least 4 hours and up to 24 hours. Just before serving, dip bottom of pan in warm water to loosen, about 1 minute. Run a small offset spatula around edges of cakes, then lift each out of pan; or cover with a platter and invert to remove. Remove parchment (if using). Use a pastry bag fitted with desired tip (Martha used a variety of star and leaf tips) to pipe buttercream or whipped cream onto cakes. Serve immediately.