I had bananas that looked like this so I decided to attempt a healthy frozen snack.
I mixed about even amounts of vanilla yogurt and Cool Whip together.
Then peeled the bananas, cut them in half and fished them out with a wooden skewer. I put them on a plate covered in wax paper then threw them in the freezer. I came back later and pulled them off and put them in a Tupperware container. Not quite as good as ice cream but almost!