I crushed bananas with a fork . I rubbed the cream sugar and eggs with an electric mixer , I added butter , milk and banana cream , and in the end sifted flour with baking powder. Composition should be creamy , easy flowing . Add drops of chocolate and mix well . I put the paper wet and squeezed well in the bottom of the pan and pour punch composition . Bake at 170-180 ° c , do the toothpick test to see when it's done ( when a toothpick comes out dry the cake is baked ) . Leave to cool and meanwhile melt the chocolate and butter in a bain marie . Then spill it over the cake and let cool a few hours to harden the frosting.