Growing up in England, banana sandwiches were made on good white bread, spread thickly with butter and spread with mashed banana.
Yum!

It's rare for me to want bananas in anything but their original state. The aforementioned homemade ice cream, and James Beard's banana bread (pecans > walnuts), are pretty much the only exceptions.

On the other hand, fried *plantains* are amazing with a Cuban plate or sandwich...