I was looking for a good Mexican casserole recipe and found this. I am not vegetarian and prefer meat in almost all my dishes so I omitted the zucchini and added ground beef. This was so simple to put together and had very short cook time, which I enjoy because my schedule usually leaves me not wanting to spend much time in the kitchen when I get home. Also, I usually have all of these things on hand around the kitchen and if I don't have one or two things, all the ingredients are easy to pick up at a low price. I think this is a great recipe all around!