INGREDIENTS
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Yield: 36 cookies
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2 1/2 cups all-purpose flour
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1 teaspoon baking powder
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1/4 teaspoon salt
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1 cup (2 sticks) unsalted butter, room temperature
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3/4 cup powdered sugar, plus more for rolling
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1 egg yolk
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2 egg whites
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1 teaspoon natural peppermint extract
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1/2 cup finely crushed natural peppermint candies or candy canes
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1 1/2 cups white chocolate chips