I saw this on facebook and decided to give it a try. My kids won't eat bananas once the skin starts to blacken, so I put them in the freezer at this point. Once frozen I chopped them and peeled them (have to do it in this order when frozen) then put them in the blender with a splash of milk.

And that's it! I have put it in a tub and back in the freezer, but it looks like ice-cream, tastes like ice-cream, but only milk and bananas! Perfect for in the summer when kids want to eat ice-cream all day.