1 pkg. taco Doritos
1 lb. hamburger
1 onion, chopped
2 cans of cream of mushroom soup
1 can water
1 c. cheese, grated
1 can Rotel tomatoes

Bring to a boil soup, water and tomatoes. Cook onion with hamburger, put a layer of Doritos slightly crushed into bottom of casserole dish. Put a layer of hamburger, then soup, then Doritos, etc. until all ingredients are used. Top with cheese. Heat in 350 degree oven until cheese is melted.