1 box of milk chocolate brownie Mix
3-4 T marshmallow cream
Micro mini marshmallows (optional)
Mix brownie mix according to package directions, and pour it into a 8×8 pan.
Put marshmallow cream into a sandwich baggie and cut the corner off to make a piping bag. Pipe marshmallow cream on top of the batter in thin strips and swirl in with a knife.
Bake according to package directions until done. Immediately sprinkle with micro marshmallows and allow to cool.