1 pkg. Doritos
1 lb. hamburger meat
1 onion, chopped
1 can cream of chicken soup
1/2 can of water
1 sm. can Rotel tomatoes
Grated Cheddar cheese

Preheat oven to 350 degrees. Mix soup, water, and tomatoes in bowl. Cook onion with hamburger meat. Place crushed Doritos into bottom of 9 x 13 inch pan. Place meat mixture over Doritos. Pour soup mixture next. Top with grated Cheddar cheese. Heat in oven, 30 to 35 minutes or until cheese is melted and casserole is hot.