Bake cake and cut into 2 inch squares. Make pudding and let firm.
Layer: Half of cake. Pour 1/2 of kahlua over cake. Spoon 1/2 pudding on top of cake. Spoon 1/2 Cool Whip on top of pudding. Break up 1/2 of Skor Bars and spread on top of pudding. Repeat. Best to let in refrigerator for a few hours.