Take one box of Duncan Hines classic yellow cake mix. Mix and bake as directed on the package. Cool.
Cut in half and crumble half of the cake in 9 x 13 dish.
16 oz. dairy free cool whip
2 cups confectioner’s sugar
Spread half of this mix on crumbled cake. Break up one large Butterfinger candy bar [I like to put it in a gallon bag and use a dough roller on it] then sprinkle on top. Crumble other half of cake on top of that, and then spread rest of cool whip mixture on top of that layer. Then crumble a large Butterfinger candy bar on top of it all.
**Candy bar should be very finely crumbled!