I was looking for an easy and fast Mexican casserole and I got a few ideas from a couple recipes here on Zaar and then added my own touches and ingredients. This is an extra creamy casserole, just delicious! And this is a very versatile recipe. Use whatever type of meat you'd like, delete the onions for an even faster prep time, add jalapeños, etc. Delete the tortillas and it is an awesome enchilada filling or even an appetizer dip.