INGREDIENTS
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16 tablespoons unsalted butter, melted, plus more, room temperature, for pan
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1 cup (8 ounces) packed light brown sugar
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1/2 cup (3 1/2 ounces) granulated sugar
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2 large eggs
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1 1/2 teaspoons pure vanilla extract
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2 cups (10 ounces) all-purpose flour
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1 1/2 teaspoons coarse salt
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8 Reese's Peanut Butter Cups, coarsely chopped