"Deep, dark chocolate layer cake recipe has an airy, smooth-as-silk Irish cream buttercream frosting. Tender and delicious!..."
INGREDIENTS
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Dark Chocolate Cake Layers
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1 cup sugar
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1 cup dark brown sugar
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1 3/4 cups all-purpose flour
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1 cup unsweetened cocoa powder extra dark plus more for dusting pans
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1/2 cup buttermilk powder sifted if necessary to remove any lumps.
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2 teaspoons baking soda
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1 teaspoon baking powder
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1 teaspoon kosher salt
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2 cups hot black coffee brewed strong
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1/2 cup vegetable oil
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2 teaspoons vanilla extract
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2 eggs
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1 egg yolk