Bananas act as egg substitutes. Add to any sweet baked thing, like waffles or pancakes.

Edit: peel them first, and put them on a plate in the freezer before you stick them in a freezer bag. It's much less intimidating when you don't have to deal with peeling a shitty slimy frozen banana.

Edit edit: Muffins are superior.

Make banana bread for friends or neighbors?

I cut them up into chunks before freezing and then use for smoothies.

Buy a chest freezer