INGREDIENTS
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1/2 cup (1 stick) butter, softened
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1 1/4 cups sugar
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1 egg plus 1 egg yolk
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1/4 cup Key lime or other lime juice
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2 teaspoon lime zest (grated peel)
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2 cups flour
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1 teaspoon baking powder
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1/2 teaspoon salt
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Confectioners’ sugar