INGREDIENTS
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1/2 cup (1 stick) + 2 tablespoons unsalted butter, at room temperature
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1 cup granulated sugar
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1 large egg
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1 large egg yolk
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1 tablespoon vanilla extract
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2 cups all-purpose flour
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1/2 teaspoon salt
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1 teaspoon baking powder
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1/2 cup Christmas-colored sprinkles