Mexican Dinner

1 lb ground beef
1 med onion, chopped
1 pkg taco seasoning
1 can corn, drained
1 can black beans, drained
1 can diced tomatoes, drained
1 c rice, cooked
Grated cheddar cheese

Brown beef and onion. Drain and add taco seasoning and water according to package directions. Simmer 5 min. Add corn, black beans, and tomatoes and stir till heated through. Add rice and mix. Top with cheese. Can eat by itself, with tortilla chips or be made into tacos.