INGREDIENTS
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1 cup all-purpose flour
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1/2 teaspoon baking powder
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1/2 teaspoon baking soda
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1 1/4 cups quick-cooking oats
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1/2 cup granulated sugar
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1/2 cup packed light brown sugar
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1/2 cup chopped walnuts
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1/2 cup semisweet chocolate chips
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Quart-size canning jar