Taco Casserole

1 lb ground beef
1 pkg taco seasoning
3/4 C water
1 can (15 oz) beans (refried, black, or pinto)
2 C monterey jack cheese
1 C salsa
1 onion chopped
1 can (2 1/3 oz) sliced olives
1 chopped tomato
2 C coarsely crushed corn chips (we like Mission brand or fritos)

Brown ground beef, add taco seasonings and water. Simmer 5 minutes.
Heat beans on stove until hot. Stir in cheese and salsa.
Spread bean mixture in bottom of 9" square pan. Add beef on top. Sprinkle corn chips, remaining cheese, and olives on top.   
Bake in 375* oven until cheese is melted and bubbly.
Remove from heat and sprinkle tomato on top.