1Heat oven to 350°F (325°F for dark or nonstick pan). Make brownies as directed on box for 13x9-inch pan. After removing pan from oven, set oven control to broil.
2Immediately sprinkle marshmallows and graham crackers over warm brownies. Broil with top 4 to 5 inches from heat 30 to 60 seconds or until marshmallows are golden brown. (Watch carefully; marshmallows and graham crackers will brown quickly.) Sprinkle with candy. Cool 30 minutes before serving (yummy served warm). For brownies, cut into 6 rows by 4 rows.