They are certainly very more-ish. And very very easy to make. They would be good for a Christmas-time treat, but let me tell you they're pretty yummy at this time of the year as well.
I halved the recipe quantities in the above recipe link (that meant they all fitted into one large baking dish) and that's easily made enough for us to eat here at home. I'm now thinking of making a few bags for the school fete next week.