It's an incredibly healthy snack and it's delicious. Just put a plate of frozen banana slices in the freezer. When you are ready to eat them, spread a little peanut butter on each slice. 

No kidding, it tastes better than ice cream. And, of course, there's no added sugar!

I recommend organic peanut butter. You can also use almond butter.

My ingredients to make a serving of one:
1 - Trader Joe's Tortilla (45 Calories, 7 grams fiber, 3 grams protein)
1/2 -  Banana (50 Calories, 1.5 grams fiber, .5 grams protein)
1 - Tablespoon *Almond Butter (85 calories, 1.5 grams fiber, 4 grams protein)
Totals: Calories 230, Fiber 10, Protein 7.5

Heat in microwave for about 17 seconds.

One side benefit for me: I no longer have to throw out rotten bananas! They usually go bad before I have an opportunity to eat "the bunch".

*Try peanut butter too. I use the organic crunchy peanut butter.