INGREDIENTS
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1 cup all-purpose flour
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1/2 cup wheat flour
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1 teaspoon baking powder
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1 teaspoon salt
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1 stick butter, softened to room temperature
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3/4 cup light brown sugar, firmly packed
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1 teaspoon vanilla
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1 egg
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3 bananas, mashed
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1 cup plus 1/4 cup crushed walnuts, toasted and cooled