INGREDIENTS
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Nonstick cooking spray
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3/4 cup all-purpose flour plus 2 tablespoons
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2/3 cup granulated sugar plus 3 tablespoons
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1/2 stick cold butter, cut into 1/2-inch cubes
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1 egg
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1 egg white
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1/4 teaspoon finely grated lemon zest
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2 tablespoons lemon juice
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1 tablespoon water
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1/4 teaspoon baking powder
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1 tablespoon powdered sugar