Yes, these donuts can easily be frozen for up to one month. To freeze them, simply place the donuts on a tray lined with parchment paper and freeze them for about two hours until they are solid.  Then transfer them to an airtight container or bag and return to the freezer. When you’re ready to eat them, remove them from the freezer and reheat them in the oven at 350°F (175°C) for a few minutes.