Preheat oven to 180c/Gas 4
Mash bananas in a bowl (get your hands in there, it's strangely satisfying)
Stir in everything else, mix it up and let it stand for 15 minutes
In the meantime, grease an 8" square baking tray
Bake for 20 minutes or until golden brown on top
Take out of the oven, let cool and then enjoy a little piece of damn healthy heaven!