INGREDIENTS
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1 cup of salted butter (2 sticks); softened
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1 1/2 cups granulated sugar
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1 whole egg
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1 teaspoon vanilla extract
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Zest of 2 lemons
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1/4 cup of fresh lemon juice
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2 1/2 cups all-purpose flour
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1 teaspoon baking soda
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1/2 teaspoon baking powder
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an extra 1/4 cup granulated sugar, for rolling