How to make
You mash the banana. In a separate bowl, beat the eggs and add them to the mashed banana.
Mix well and add the remaining products without the nuts.
Stir again.
Pour the resulting mixture into a baking pan and decorate it with the nuts.
Put the sponge cake to bake in a preheated oven at 390°F (200°C) for about 20-25 minutes.