"These are addictive!! I made them once when i was at my parents .. an hour later they were all gone :)..."
INGREDIENTS
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1 cup butter
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1 cup icing sugar
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1 egg yolk
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1 teaspoon vanilla
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1 1/2 cups flour
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1 cup potato chip, crushed (unflavored)
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1 cup chopped walnuts
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icing sugar, for dusting