INGREDIENTS
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1/2 cup of butter, melted
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1 cup of tightly packed dark brown sugar
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1 egg, lightly beaten
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1 teaspoon of vanilla
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1/2 teaspoon baking powder
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1/8 teaspoon of baking soda
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Pinch of salt
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1 cup of all-purpose flour
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1/3 cup of butterscotch chips (chopped walnuts and chocolate chips are equally tasty)