1 box chocolate cake mix
3/4 c. peanut butter
1 stick butter, melted
1 (7 oz.) jar marshmallow creme

Combine melted butter with cake mix. Reserve 1 1/2 cups of cake mix and butter. Pat crumbs into greased 13 x 9 inch pan. Mix peanut butter and marshmallow creme and spread evenly over crumbs in pan. Then sprinkle remaining crumbs on top. Bake at 350 degrees for 20 minutes. Cut into bars.