INGREDIENTS
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1 cup butter, softened
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1/3 cup confectioners' sugar
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1 teaspoon vanilla extract
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1 2/3 cups all-purpose flour
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2/3 cup granulated sugar
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1 1/2 teaspoons cornstarch
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1 teaspoon grated lemon peel
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1/4 teaspoon salt
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1 egg, beaten
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3 tablespoons lemon juice
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1 tablespoon butter, melted