INGREDIENTS
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1½ sticks (3/4 cup) unsalted butter, melted and cooled
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1 cup light brown sugar, packed
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½ cup granulated white sugar
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2 large eggs, room temperature
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1 teaspoon pure vanilla extract
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¾ cup creamy peanut butter
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1½ cups all-purpose flour
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1 teaspoon baking powder
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½ teaspoon salt
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1 cup peanut M&M's