1 box Pillsbury Plus yellow cake mix
1 egg
2/3 c. butter

Mix and put in 9 x 13 inch ungreased pan. Bake 15 minutes at 350 degrees. Sprinkle 3 cups mini marshmallows right away. Bake in oven for 5 minutes. Let cool.

TOPPING:

1/4 c. butter
2/3 c. corn syrup
2 tsp. vanilla
12 oz. pkg. peanut butter chips

Melt the above and add: 2 c. Rice Krispies