INGREDIENTS
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Cake layers:
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6 cups cake flour, sifted
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5 teaspoons baking powder
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1 teaspoon salt
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1 cup unsalted butter, at room temperature
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1/2 cup vegetable oil (I like peanut oil)
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2 1/4 cups granulated sugar
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8 egg whites, at room temperature
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1 1/2 cups buttermilk
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12 ounces mini chocolate chips
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Chocolate chip cookie dough filling:
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1 1/2 cups light brown sugar
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1 cup butter
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2 teaspoons vanilla extract
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2 1/2 cups flour
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1 teaspoon salt
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1/2 cup heavy cream
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1 cup mini chips
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Boiled milk frosting and chips décor:
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1/4 cup flour
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1 teaspoon salt
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2 cups whole milk
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2 cups/1 lb unsalted butter, softened
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2 cups caster sugar
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1 tablespoon vanilla bean paste or vanilla extract
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1/2 cup regular sized semisweet chocolate chips
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1/4 cup mini semisweet chocolate chips