To ensure a steady supply of cookies instead of dozens all at once and then none the next week, I'm freezing them five at a time. I fill up small zipper bags and then put them into a larger freezer bag. Whenever we want cookies, we just pull out a small bag and let it thaw, unopened, at room temperature for a few hours. The fun of the full cookie jar is lost, but moderation and variety is gained.
Oh, and by the way, this recipe for oatmeal cookies is the best I've ever tasted!