INGREDIENTS
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1 1/2 cups old-fashioned rolled oats
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2 cups all-purpose flour
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1 teaspoon baking powder
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1 teaspoon baking soda
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1 teaspoon salt
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2 sticks (1 cup) unsalted butter, softened
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1 cup granulated sugar
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1 cup firmly packed light brown sugar
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1 tablespoon vanilla extract
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3/4 cup peanut butter
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2 large eggs
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a 12-ounce bag semisweet chocolate chips
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8 ounces semisweet chocolate, grated