INGREDIENTS
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1/2 cup butter (softened)
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1/2 cup granulated sugar
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1 large egg
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1 teaspoon vanilla extract
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1 1/2 cups all-purpose flour
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1/2 teaspoon baking powder
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1/4 teaspoon salt
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1 cup confectioners' sugar
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2 tablespoons butter (softened)
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2 tablespoons milk