INGREDIENTS
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1 cup all-purpose flour
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3/4 teaspoon baking powder
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1/2 teaspoon baking soda
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1 teaspoon kosher salt
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1/4 teaspoon cinnamon
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14 tablespoons unsalted butter, at room temperature
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1 cup sugar
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1/4 cup packed light brown sugar
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1 large egg
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1 teaspoon vanilla extract
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2 1/2 cups old fashioned rolled oats