Speedy Little Devils by Erica

1. Empty cake mix into bowl - cut margarine into cubes & add to mix - combine until mixture is like fine crumbs. 2. Reserve 1 1/2 cups. Pat remaining mix into 13 x 9 inch pan. 3. Stir together peanut butter & marshmallow creme. Mixture will be very thick. Smooth onto top of cake mixture. 4. Coat hands with oil & pull peanut butter & marshmallow creme evenly over top. 5. Evenly distribute remaining crumb mixture over the top. 6. Bake at 350 degrees for 20 minutes.