Celery Root And Squash Gratin With Walnut Thyme Streusel Food

SQUASH GRATIN

Steps:

• Toss 4 thinly sliced summer squash or zucchini with 1 tablespoon kosher salt; let sit 20 minutes, then rinse and pat dry. Chop 2 shallots, 1/4 cup each parsley and mint, 3 tablespoons olive oil, 1 tablespoon thyme, 1 seeded red jalapeno and 1 teaspoon lemon zest in a food processor; toss with the squash and 3/4 cup grated gruyere. Arrange evenly in a baking dish; top with 1/4 cup more cheese. Bake at 400 degrees F, 35 to 40 minutes.

CELERY ROOT GRATIN

Steps:

• Peel and coarsely chop the potatoes and the celery root. Put potatoes and celery root in separate pots and add salt to each.
• Boil the potatoes and celery root until soft, and then drain them.
• Pour the heavy cream into a pot and bring it to a boil. Add the butter, saffron, garlic, and 1 cup of the gruyere. Cook about 5 minutes over moderately low heat until the cream mixture is bright yellow.
• Puree drained celery root in food processor, gradually adding yellow cream mixture.
• Mash the drained potatoes to a rough texture.
• Add pureed celery root to mashed potatoes. Add the rest of the gruyere and mix together. Season with salt and pepper.
• Butter a 13 by 9-inch gratin dish and put the puree in it. Sprinkle with the parsley.
• Bake at 400 degrees for about 15 minutes.

CELERY ROOT AND SQUASH GRATIN WITH WALNUT-THYME STREUSEL

Steps:

• For the streusel: Combine all ingredients in a medium bowl and mix until butter is incorporated. Cover and place in the refrigerator until ready to use. For the gratin: Heat the oven to 400°F and arrange a rack in the middle. Coat a 13-by-9-inch baking dish with butter and set aside. Pour cream into a large bowl and set aside. Slice squash and celery root into 1/4-inch-thick pieces with a mandoline or sharp knife, placing pieces into the cream as they are cut. Toss until well coated. Melt butter in a medium frying pan over medium heat. When it foams, add onion and season well with salt and freshly ground black pepper. Sauté until soft and translucent, about 5 minutes; set aside. Construct gratin by ladling 1/3 of the squash and celery root mixture into the baking dish, then seasoning well with salt and freshly ground black pepper. Top with 1/2 of the onions, then another layer of squash and celery root. Season the second layer with salt and pepper and cover with the remaining onions. Place the last of the squash and celery root on top and press down to create an even surface. Season with salt and pepper, then pour the remaining cream over top. Sprinkle streusel evenly over gratin. Bake until vegetables are soft and streusel is golden brown, about 40 to 50 minutes. Let sit at room temperature for about 20 minutes before serving.

SQUASH-CELERY ROOT SOUP

Steps:

• Preheat oven to 400 degrees. Put squash, celery root, onion, oil, and 1/4 teaspoon fennel seeds on a rimmed baking sheet. Season with salt and pepper; toss. Spread mixture out in a single layer. Roast, tossing occasionally, until vegetables are soft and golden brown, about 50 minutes.
• Transfer mixture to a medium saucepan. Add wine and stock; bring to a boil. Reduce heat to medium-low; simmer, covered, 30 minutes. Remove from heat; uncover. Let cool 10 minutes.
• Puree in a blender (never filling more than halfway). Pass through a sieve into a bowl; discard solids. Return puree to saucepan. Reheat over medium heat. Season with salt and pepper, if necessary.
• Toast remaining teaspoon fennel seeds in a dry, small skillet over medium-low heat until fragrant and pale golden brown, 2 to 3 minutes. Let cool. Garnish each serving of soup with fennel seeds.