Fresh or frozen cranberries are usually in abundance at the grocery store around the holidays, but if you can't seem to find them or just don't have the time to make it there, you've got options. Dried cranberries or "craisins" can be used, but keep in mind the cookies will not have the same flavor and texture. I prefer the fresh or frozen cranberries because of the burst of flavor they give when you bite into the cookie, it's the best!