Pour 1 large package of taco flavored Doritos in long dish. Brown 1 1/2 pounds hamburger meat and 1 onion. Mix 2 cans tomato and green chiles, 1 can cream of chicken soup, and 1 small can Milnot. Pour this over Doritos.

Put 1 small box Velveeta cheese over top. Cover with foil. Bake 45 minutes at 350 degrees. Take lid off and bake 10 minutes longer.