INGREDIENTS
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Vegetable oil cooking spray
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2 cups flour
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3/4 cup unsweetened cocoa powder
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1 1/2 teaspoons baking powder
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1/2 teaspoon fine sea salt
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2 sticks (1 cup) unsalted butter, at room temperature
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1 1/2 cups sugar
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2 eggs, at room temperature
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1/2 cup mascarpone cheese, at room temperature
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1/4 cup vegetable oil
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1 teaspoon pure vanilla extract
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1/4 cup pasteurized egg white product (recommended: All Whites)
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1/8 teaspoon cream of tartar
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1/4 cup sugar
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1/4 cup brewed coffee, cooled