Speedy Little Devils

Directions

1. 1
   Combine melted butter and dry cake mix.
2. 2
   Reserve 1 1/2 cups of this topping for top crust.
3. 3
   Put remaining crumb mixture into an ungreased 9x13 cake pan.
4. 4
   Top that layer with combined peanut butter and marshmallow cream and spread evenly.
5. 5
   Crumble remaining mixture over that and gently press into filling.
6. 6
   Bake 20 minutes at 350°F.
7. 7
   Cool.