This is a very good dish and was enjoyed by my teenager and 7 year old. I took your suggestion about the beans, but used refried. I also used a mixture of pepper jack and 4-cheese Mexican blend. Next time I think I will put a little bit of the sauce in the pan before I layer the tortillas in. I think this would keep them from being less tough on the bottom. Also, after it finished baking, I uncovered it and let the cheese brown under the broiler. We were in a hurry to eat this tonight, but I think if I had let it set a while after baking, it would have been firmer. Thank you for posting, it is going into my favorites book.