Yes! If you have a bunch of overripe bananas, you can either peel them and freeze them in a ziplock bag or, if they are completely brown and mushy, just throw them in the freezer without peeling. When you are ready to bake, take them out, place in a bowl, let them thaw completely and then squeeze them out of their skins. The insides will be almost liquid – that’s ok. If you froze the bananas peeled, just let them thaw before mashing and using in this recipe.