1 lb. ground beef
1 can cream of mushroom soup
1 can Rotel tomatoes
2 c. grated cheese
1 pkg. Doritos
1 tbsp. butter

Brown 1 pound ground beef. Drain. Add cream of mushroom soup and 10 ounce can of Rotel tomatoes. Cover bottom of saucepan with butter. Crumble Doritos on bottom of dish, saving 1/4 of chips for later use. Pour ground beef mixture over chips. Add rest of chips on top of mixture. Cover with 2 cups grated cheese. Bake at 350 degrees until cheese melts (5-10 minutes).