Banana and Jell-O layer cake

Layer 1

• 1 cup (225 g) butter
• ¾ cup (85

1. Prepare the sponge cake using a third of the recipe and place at the bottom of a round cake pan.
2. Prepare layer 1: Mix the softened butter and sugar with an electric whisk. Gradually add in egg yolks and mashed bananas and keep mixing until the batter is smooth.
3. Add in slightly watery Jell-O (let it stand for half the ti