Pecan Pie Brownies

BROWNIES 18 ounces box brownie mix (18 or 19 ounce) box, plus ingredients listed on box directions PECAN TOPPING ¼ cup unsalted butter melted ⅔ cup brown sugar 134 grams ⅓ cup light corn syrup 2 large eggs 1 tablespoon vanilla extract ½ teaspoon kosher...