1 (18.25 ounce) box yellow cake mix
1/2 cup butter or margarine, melted
1 egg
3 cups miniature marshmallows
1 cup candy-coated milk chocolate candies
1/2 cup cocktail peanuts, chopped

Mix cake mix, butter and egg until blended. Spread into lightly greased 13 x 9-inch baking pan. Bake at 375 degrees F for 16 to 20 minutes or until wooden pick inserted in center comes out clean.

Immediately sprinkle marshmallows, candies and peanuts over crust. Bake an additional 2 to 3 minutes or until marshmallows begin to melt. Cool completely; cut into bars.