"Southern Living..."
INGREDIENTS
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3/4 cup unsweetened cocoa
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3/4 cup all-purpose flour
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1/2 teaspoon baking powder
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1/2 teaspoon salt
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1/2 cup unsalted butter, softened
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1 cup sugar
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3 large eggs, at room temperature
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1 teaspoon vanilla extract
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1/2 cup sour cream
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1 1/2 cups milk chocolate chips
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1/2 cup unsalted butter, softened
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3 cups powdered sugar
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1 teaspoon vanilla extract
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2 -3 tablespoons milk