Separate the eggs, beat the yolks with sugar and vanilla sugar until frothy, then add the mashed bananas, the liquid cream and the oil and stir. Add nuts, flour with baking powder. Beat the egg white firmly and mix it into the batter. Bake at approx. 200 degrees for 1/2 hour on the lower rail.
Covering:
Boil the vanilla pudding according to the instructions on the package, but only with 1/4 liter of milk, allow to cool. In the meantime, beat the soft margarine with the mixer, add the sugar and rum and add the cooled pudding, place the banana slices on the cooled cake and spread the vanilla cream on.
Put in the fridge for a moment and then decorate with the chocolate icing.
Tip:
The cake can be frozen very easily without topping.