Leave the bananas whole, cut in half or slice them.
Place bananas on a baking sheet with space in between. Freeze for 1-2 hours. This prevents bananas from sticking together.
Transfer to a freezer-safe container. Use within 6 months.
Frozen bananas can be blended frozen into smoothies or thawed for baking recipes. Thaw at room temperature for 2-3 hours, overnight in the fridge or in the microwave at 50%. Time varies by microwave, but approximately 3 minutes will thaw 4-5 bananas. Any liquid accrued during thawing can be discarded or used in recipes.
Notes
Bananas can also be frozen with the peel on, but they will have to be thawed to remove the peel. If making frozen bananas for smoothies, you'll want to use peeled bananas.