INGREDIENTS
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2 sticks unsalted butter
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3/4 c. dark brown sugar
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3/4 c. granulated sugar
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1 egg
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1 1/2 tsp. vanilla extract
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2 c. wheat flour
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1 tsp. baking soda
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1/2 tsp. salt
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1 1/2 c. semisweet chocolate chunks (plus more for topping cookies)