For the banana cake, first make the base. Separate the eggs. Beat 2 egg yolks with sugar until foamy. Then slowly beat in the oil.
Slowly stir in water, flour and baking powder. Beat the egg whites and fold in. Spread the mixture on a baking tray. Bake at 180 degrees for about 25 minutes.
For the 1st topping, spread jam on the finished base and top with halved bananas.
For the 2nd topping, melt the milk chocolate into the whipped cream and bring to the boil briefly. Then add the gelatine. Place a cake ring around the cake base and pour the mixture over the base.
For the 3rd topping, soak the gelatine. Melt the white chocolate in 50 ml whipped cream and then add the gelatine.
Mash the bananas with a little lemon juice and fold into the chocolate mixture. Whip 2 cups of cream stiffener and fold in the finished banana mixture.
Then spread everything on the cake base and chill well. Chill the banana cake for at least 4 hours.