For the quick banana cake, bring the milk and sugar to a boil. Add the pudding and stir.
Crumble the cookies and place them in a mold. Cut the bananas into pieces and add to the crumbled cookies. Add the pudding and stir everything.
Empty into a greased cake pan, smooth it out and put it in the fridge to set.
Finally, add whipped cream on top of the quick banana cake.