2 lbs. ground beef
1 med. onion, chopped
1 sm. can chopped green chilies
1 can Rotel tomatoes
1 can cream of mushroom soup
1 can sm. reg. tomatoes
1 pkg. Doritos (med.)
1 lg. Longhorn cheese, grated
Dash of chili powder

Brown beef, onions and season with salt, pepper and chili powder. Add soup, green chilies, Rotel tomatoes and plain tomatoes. Stir and bring to a boil; simmer over medium heat 20 to 30 minutes. Line pan with Doritos; pour mixture over them and top with cheese. Heat in 325 degree oven for about 15 minutes.