To freeze Christmas cookies, you'll need to follow a few simple steps. First, make sure your cookies are completely cooled before attempting to freeze them. Once they're cool, you can place the cookies in an airtight container or freezer-safe bag. Be sure to label and date the container so you can keep track of when they were frozen. When you're ready to enjoy the cookies, remove them from the freezer and let them thaw at room temperature. This process should only take a few minutes. You can also reheat the cookies in a low-temperature oven or toaster oven to restore their original texture.