Any ideas on how to use green bananas?

Hello ^_^

My husband buys his bananas on the green side so that they won’t be too ripe by the time he gets around to eating them all -- he eats one every day.

Anyway, he purchased a bunch that part of them just won’t seem to ripen. He was just going to throw them away, but I can’t help but wonder if there’s some other use for them. I just hate to throw food away.

Any ideas? Thanks.

~Marilee