This recipe for lemon banana cake in the Thermomix is perfect for those who love the tangy flavor of lemon. Made with lemon zest and lemon juice, this cake is light and refreshing. The recipe calls for ripe bananas, which are mashed and mixed with the other ingredients in the Thermomix. The mixture is then poured into a cake tin and baked in the oven until golden brown. Serve with a dusting of powdered sugar or a dollop of whipped cream for a delicious lemony treat.