Banana sponge cake is a fruity variation of the classic sponge cake. The original sponge cake recipe is widely used in preparing several other desserts like baked Alaska, puddings, buche de noel and so forth. Banana sponge cake recipe has chopped banana as an addition, keeping rest of the ingredients similar to the original recipe. The chopped banana can be further mashed and then mixed with flour, sugar, eggs, baking powder and milk. These types of cakes are often served as desserts or as tea-time snacks.