Yes, you should always use a freezer bag when freezing bananas, whether you are freezing bananas sliced or whole. You can use a disposable plastic freezer-safe bag or a reusable silicone bag.

Sure, it’s possible to freeze both unripe and ripe bananas. But ripe or overripe bananas have the best flavor when frozen to use later for baking or smoothies. Learn how to store the unripe bananas.