01 -
Mix the cake ingredients according to package instructions, and add in the sour cream and chocolate chips.
02 -
Bake the cake in a 9 x 13 pan as directed on the cake mix package.
03 -
Remove from the oven and poke holes in the cake while it’s still warm using the end of a wooden spoon.
04 -
Set aside 5 tablespoons of the caramel topping and pour the remaining caramel into the holes in the cake.
05 -
Place the cake in the refrigerator and chill for at least 30 minutes.
06 -
Spread vanilla frosting on top of the chilled cake. Sprinkle the crumbled Butterfinger pieces over the top and drizzle with the remaining caramel.
07 -
Slice the cake and serve immediately.