INGREDIENTS
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2 sticks (16 tablespoons) salted butter, melted and slightly cooled, plus more for greasing
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2 1/4 cups all-purpose flour
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1/4 teaspoon baking powder
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1/2 teaspoon baking soda
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1/2 teaspoon fine sea salt
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1 cup finely chopped salted peanuts
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1 cup firmly-packed dark brown sugar
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1/2 cup granulated sugar
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1 1/2 cups crunchy peanut butter
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2 large eggs, lightly beaten
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2 teaspoons vanilla extract
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1 cup grape jam or chunky preserves