Speedy Little Devils
["1 box devil's food cake mix", "1 stick margarine, melted", "1/2 c. creamy peanut butter", "1 (7 oz.) jar Marshmallow Creme"]
["Combine melted margarine and dry cake mix.", "Reserve 1 cup of this for top crust.", "Put remaining crumb mixture into ungreased 13 x 9 x 2-inch pan.", "Top that layer with combined peanut butter and Marshmallow Creme and spread evenly.", "Crumble remaining cake mixture over that.", "Bake 20 minutes at 350\u00b0.", "Cool before cutting."]
["cake mix", "margarine", "peanut butter", "Marshmallow Creme"]