INGREDIENTS
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1 1/2 cups all-purpose flour
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1/4 teaspoon baking powder
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1/4 teaspoon salt
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1/8 teaspoon baking soda
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1/2 cup butter (8 tablespoons, softened)
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1 cup granulated sugar
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1/2 teaspoon vanilla extract
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1 large egg
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1.5 teaspoon freshly grated lemon zest
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1 tablespoon freshly squeezed lemon juice
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1/4 cup granulated sugar
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1/4 cup powdered sugar
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yellow food coloring (optional)