1 package devil's food cake mix
1/4 cup butter, melted
1/4 cup water
3 cups mini marshmallows
1 cup chocolate m&m's
1/2 cup chopped peanuts
In a large mixing bowl, combine the dry cake mix, butter, water, and egg; mix well. Press into a greased 9x13. Bake at 375 for 20-22 minutes or until toothpick comes out clean.
Sprinkle with marshmallows, m&m's and peanuts. Bake 2-3 minutes longer or until the marshmallows begin to melt. Cool on wire rack. Cut into bars.
You could change this recipe up by changing the cake flavor and toppings.