First of all, this was excellent. Second of all, I realized you can put ANYTHING in the middle. A friend of mine at work is a chef, and he just took first place with a recipe similar to this.
When I put my chorizo and cream cheese on the inside, I just mixed them together and then spread. It was super easy and, I would assume, tasted the same as putting them on separately. Next time, though, I'll use a lot more chorizo. And green chili. Actually, I have SO many ideas now!