Peel the bananas.

Cut them into small pieces (they don't have to be too small).

Pour the milk to the top of the bananas or when they start floating.

Here you can add as much sugar or cinnamon as you like but I didn't because it's alreasy sweet enough and it is healthier.

Mix it all up in a blender or with any mixer (the normal one for like creams or cakes works too).

You're done! Enjoy!