1 box chocolate cake mix
2 small boxes Jello cheesecake pudding mix
2 8-oz. tubs Cool Whip
3 cups milk
1 cup Kahlua
small Hershey chocolate bar
Prepare cake mix according to package directions.
Combine pudding mix, milk, and Kahlua. Blend in one container of Cool Whip. Chill.
When cake is cool, crumble 1/8 cake in bottom of glass bowl and add a layer of pudding mixture. Crumble another 1/8 of cake and add a layer of plain Cool Whip. Repeat layers, finishing with Cool Whip, and top with grated chocolate bar.