1 box (1 lb 6.5 oz) Betty Crocker® Original Supreme brownie mix (with chocolate syrup pouch)
Water, vegetable oil and eggs called for on brownie mix box
1/2 cup butter or margarine
1/2 cup packed brown sugar
5 cups miniature marshmallows
6 cups popped popcorn
1 cup salted peanuts
Recipe
1. Heat oven to 350°F. Line 13x9-inch pan with foil so foil extends about 2 inches over short sides of pan. Grease bottom only of foil with cooking spray or shortening.
2. Make and bake brownie mix as directed on box for 13x9-inch pan, using water, oil and eggs. Cool completely, about 1 hour.
3. In large microwavable bowl, microwave butter and brown sugar uncovered on High 2 minutes. Stir in marshmallows. Microwave uncovered on High 1 to 2 minutes longer or until melted; stir until smooth. Stir in popcorn and peanuts until coated. Spoon evenly over brownies; press lightly to even surface. Cool completely, about 1 hour. For brownies, cut into 6 rows by 4 rows.