1 container of Caramel Frosting, either betty crocker or duncan hines
2 large snicker bars
Mix the cake mix, eggs, oil, water, mayo, instant pudding mix all together till well mixed, it will look kind of thick and whippy, bake as directed on your box or your pan, i use wiltons cake pans and you have to bake at 325 for a little longer than normal so you dont burn the outside.
once done baking let cool like normal, then put on your plate and frost with the caramel frosting, set aside, chop up the snicker bars, not too small, and sprinkle on top. if you do a 2layer cake just double everything and put some chopped up snickers in the caramel frosting filling.