1. Grind them up and use like dried fruit in baked stuff like muffins or coffee cake.
2. You could also break them up or crush them and add to homemade granola.
3. What about grind them up and mix with crushed cookies to make a crust for a coconut cream pie?
4. Serve them at a playdate to your kids' least picky friends.
Their friends eating something they don't like may change your kids' minds about the bananas. This has worked for me several times.
Let us know what you end up doing. Good luck!