1 box (18.3 ounces) brownie mix or favorite brownie recipe
1 carton (1.5 quarts) DREYER'S or EDY'S GRAND S'mores Ice Cream
1 package (10 ounces) mini or large marshmallows
PREHEAT oven to 350° F. Line 9-inch-square baking pan with foil, allowing excess to overhang on all sides.
COMBINE graham cracker crumbs and butter in large bowl; press into bottom of prepared pan.
BAKE crust for 8 minutes.
PREPARE brownie batter according to package directions; pour over crust. Bake according to package directions (about 30 minutes). Cool completely.
SOFTEN ice cream by letting it sit at room temperature for about 15 minutes. Carefully spoon ice cream over top of brownies, smoothing down top. Cover and freeze overnight.
PREHEAT oven to 500° F.
SPRINKLE marshmallows over top of ice cream, covering ice cream completely. Bake for 3 to 5 minutes or until marshmallows are toasted. Carefully lift brownies from pan using foil overhang. Cut into squares.