INGREDIENTS
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FOR THE CUPCAKES
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1 3/4 cups all-purpose flour
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3/4 teaspoon baking powder
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1/2 teaspoon salt
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1/4 teaspoon baking soda
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3/4 cup (1 1/2 sticks) unsalted butter, softened
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1 1/3 cups sugar
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2/3 cup natural, creamy peanut butter
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3 large eggs
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1/2 teaspoon pure vanilla extract
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1/2 cup sour cream
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FOR THE FROSTING
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12 ounces cream cheese, room temperature
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1 1/2 cups confectioners' sugar, plus more for decorating
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3 tablespoons unsalted butter, softened
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1 1/2 cups creamy peanut butter
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