1 (8-10 oz.) pkg. microwave brownie mix
1/4 c. miniature marshmallows
1/4 c. walnuts, chopped
1/4 c. semi-sweet chocolate chips

Prepare brownie mix as directed. Before cooking sprinkle marshmallows, walnuts and chocolate chips onto uncooked brownies. Cook as package directs. Cool in dish, cut into 16 squares.