INGREDIENTS
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For the peanut butter cookies:
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1 1/2 cups all-purpose flour*
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3/4 teaspoon baking soda
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1/4 teaspoon salt
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8 tablespoons butter
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1 cup packed light brown sugar
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1 egg
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1/2 teaspoon vanilla extract
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3/4 cup chunky peanut butter
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1/2 cup granulated sugar
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For the peanut butter filling and assembly:
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4 tablespoons butter, at room temperature
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1/2 cup chunky peanut butter
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1 cup powdered sugar, sifted
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2 tablespoons whole milk
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1/2 teaspoon vanilla extract