- To assemble cake, place 1 cake layer, smooth-side up, on a cake plate. Top with 1/4 of softened ice cream, smoothing surface with a knife or spatula. Repeat with remaining two layers of cake. (For best results, place cake in freezer for 20 to 30 minutes after adding each layer of ice cream.) After third layer of ice cream, arrange small scoops of ice cream on top around edge of cake. (Scoops should be touching). Return to freezer until serving time.
- To serve, pile banana slices in center of cake, and pour 3/4 cup cooledCaramel Rum Sauce over bananas. (Rum sauce will run down sides of cake between ice-cream scoops.) Serve remaining rum sauce with cake as an accompaniment.