Once baked and fully cooled, the cookies can be kept in an airtight container on the counter for up to 5 days, or in the fridge for up to 10 days. You can make the dough ahead of time and portion individual cookies onto a baking sheet the same as you would to bake them, but instead freeze them until firm enough to handle. Transfer the dough balls to a storage container or freezer bag and freeze for up to 3 months. You can bake them straight from frozen, no need to thaw, but they may take a few additional minutes in the oven.