Heat oven to 350°F (325°F for dark or nonstick pan). Make brownies as directed. After removing pan from oven, set oven to broil.
Immediately sprinkle marshmallows and graham crackers over warm brownies. Broil about 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 chocolate candy. To serve warm, cool about 30 minutes. For brownies, cut into 4 rows by 4 rows.
Use a plastic knife to cut brownies.
Wrap up brownies individually in waxed paper or foil for picnics or tailgating.