INGREDIENTS
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1/2 cup butter, softened
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1/2 cup cooking oil
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1 cup powdered sugar
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1/2 cup granulated sugar
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3/4 teaspoon baking soda
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3/4 teaspoon cream of tartar
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1/4 teaspoon salt
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1 egg, lightly beaten
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3/4 teaspoon vanilla
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2-1/2 cups all-purpose flour
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1/3 cup granulated sugar, coarse crystal sugar or colored sugar