INGREDIENTS
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1 3/4 cups (222 grams) all-purpose flour
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1/2 teaspoon salt
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1 teaspoon baking powder
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1/2 teaspoon baking soda
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1/4 teaspoon ground cinnamon
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1 1/2 sticks (170 grams) unsalted butter, at room temperature
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3/4 cup (150 grams) granulated sugar
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1 1/4 cups (250 grams) packed dark brown sugar
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2 large eggs plus one egg yolk
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1 teaspoon vanilla extract
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3 cups (270 grams) old-fashioned rolled oats
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1 1/2 cups (255 grams) semisweet chocolate chips