cake mix, banana supreme
heavy whipping cream
Prepare cake mixes as directed on packages for round cakes.
Cool cakes 5 to 7 minutes; remove from pans.
Place on baking sheet and freeze uncovered until firm, about 2 hours.
Prepare pineapple filling.
Split cakes to make 4 layers.
Place 1 chocolate layer rounded side down on plate; drizzle with 2 teaspoons of the rum.
Spread ⅓ of the pineapple filling (about 1 cup) over rum.
Repeat with 1 banana layer and 1 chocolate layer. Top with 1 banana layer rounded side up.
Prepare frosting mix as directed on package; frost top and sides of cake.
Beat whipping cream and 2 teaspoons vanilla in chilled bowl until stiff.
Fold in crushed pineapple, well drained.