How To Defrost Frozen Banana Baby Food. Place your mashed bananas in a blender or food processor. Thawed whole bananas look gross, all floppy and brown, but they work great in recipes.
Using a fork can result in larger pieces, so it’s your call. Peel, and cut them into roughly ½ inch thick slices. When using frozen bananas for smoothies or ice cream there is no need to thaw before using.