Taco Casserole

1 lb ground beef
4 C cooked brown rice
5 C cooked pinto or kidney beans
2 cans corn
3-4 cans diced tomatoes
1 TBS chili powder
1 tsp salt
1 can black olives
1 C chopped onions
grated cheese
tortillas (opt.)

-cook meat, rice, and beans. Simmer all ingredients (except cheese and tortillas) for 5 minutes. Layer with tortillas, mixture, cheese, etc… in baking dish. Bake to melt cheese.