INGREDIENTS
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•1/2 cup butter, softened
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•1/2 cup white sugar
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•1/2 cup brown sugar
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•1 egg
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•2 teaspoons vanilla extract
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•3 medium bananas, mashed
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•1/2 cup sour cream
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•1 cup flour
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•1/2 cup cocoa powder
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•1 teaspoon baking soda
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•1 cup milk chocolate chips