Mash the bananas with a fork in a bowl then add the egg, melted butter and sugar. Mix until sugar is completely dissolved.
Gently add the flour and the baking soda and keep mixing.
Add half of the batter in a loaf pan (in my case i used a 20 cm round cake pan) then sprinkle with the half of cinnamon_sugar. With a chopstick swirl the batter until it looks like marble pattern.
Add the other half of batter and sprinkle with the rest of cinnamon sugar on top.
If you are using a loaf pan, bake the banana bread in a preheated oven at 180 Celsius for nearly 50 minutes.
In my case i used a round 20 cm cake pan and the banana bread was done in 25 minutes or until a toothpick inserted in the center comes out clean.
Enjoy
