Making them is really easy, a few steps and the delicious sweet melting in the mouth is ready to be enjoyed. Brownies, whose origins are controversial between Boston and Chicago, is a cake served as squares, often offered for snacks and served together with Classic American coffee.
Mix the butter and the two chopped chocolates in the bain-marie, stirring occasionally to obtain a homogeneous mixture. Remove from the fire.
With the aid of a whip, incorporate the eggs one by one, then combine the flour and sifted cocoa and cinnamon. Finally add the banana cut to washers, holding some slices.
Pour the mixture into a rectangular baking tray of about 20 inches lined with baking paper, place over the last sliced banana slices aside and bake for 35 minutes at 180 °. Bend and let cool. Cut into squares, sprinkle with a little bitter cocoa and serve.