To make a simple layered Mexican casserole, cover tortilla chips with 1 pound of browned ground beef, 8 ounces of tomato sauce, taco seasoning, 16 ounces of canned beans, 4 ounces of chopped green chilis, 1 cup of sour cream, and grated cheddar cheese. Microwave to 150 degrees Fahrenheit.
For a layered Mexican casserole that does not use the microwave, arrange four corn tortillas in one layer in a 2-quart baking dish. Brown 1 pound of ground beef, and mix it with half of a 16-ounce jar of salsa. Mix a 16-ounce can of refried beans with the remaining half of the salsa. Spread them over the tortillas. Top this with half of the meat mixture and 3/4 cup of Mexican cheese blend.
Add a second layer of tortillas. Top this with one 15-ounce can of Spanish rice and the other half of the meat mixture. Add another 3/4 cup of Mexican cheese blend, and top with crushed tortilla chips. Bake at 350 degrees for 30 to 40 minutes until the casserole is heated through the center and bubbly on the sides.
Use boiled chicken breast mixed with black beans, sour cream, green chilis and reduced fat cheese to make a version of Mexican layered casserole that is lower in fat and calories.