"With only a few ingredients, these Christmas Shortbread Cookies are a simple and delicious addition to your holiday baking!..."
INGREDIENTS
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1 cup unsalted butter, room temperature
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1/4 cup plus 3 tablespoons powdered sugar
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1/4 cup granulated sugar
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1/2 teaspoon vanilla extract, optional
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2-1/3 cups all-purpose four
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1/4 teaspoon salt
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2 tablespoons red and green nonpareils