For the oatmeal banana cake, mash the bananas well with a fork. Mix eggs, cane sugar, oatmeal, yogurt and oatmeal together well.
Add flour, cocoa powder, baking powder and oil and mix well.
Pour the dough into a greased and floured baking pan. Bake in the oven at 180 °C top/bottom heat for about 40 minutes.
Let cool and decorate the oatmeal banana cake with chocolate icing or powdered sugar as desired.