Absolutely, here's what I've found to be the best method! After you’ve mashed them, let them come to room temperature, then transfer to zip-top bags with the date written on them. Flatten the bags out and remove as much air as possible, then freeze until solid. Once frozen, stack them like books on a shelf to keep your freezer tidy! They should last for about 6 months when stored this way and will give you extra time the next time you prepare a meal!