INGREDIENTS
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3/4 cup cocoa powder
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3/4 cup flour
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1/2 teaspoon baking powder
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1/4 teaspoon salt
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3/4 cup unsalted butter, room temperature
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1 cup sugar
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3 large eggs
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1 teaspoon vanilla extract
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1/2 cup sour cream
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4 large Reese’s Peanut Butter Cups, cut into small pieces
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Peanut Butter Frosting
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1/2 cup butter, softened
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1 cup Peanut Butter
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3 tablespoons milk, or as needed
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2 - 2 1/2 cups Powdered Sugar