INGREDIENTS
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1 cup (2 sticks) butter or margarine
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1 cup sugar
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1/2 cup light brown sugar
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1 teaspoon vanilla extract
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1 egg
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3 Tablespoons key lime juice*
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1 teaspoon baking soda
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2 cups flour
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3/4 cup graham cracker crumbs
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About 1/3 cup additional graham cracker crumbs, for rolling.