Taco Hotdish 16 May 13

1 lb hamburger
1 onion, chopped
1 – 8oz can tomato sauce
1 pkg dry taco mix
1 – 8oz bag Doritos
1 – 12oz carton cottage cheese
1 – 8oz carton sour cream
2 cups shredded Monterey Jacl cheese
2 cups shredded Cheddar cheese

Combine meat and onion in skillet; cook over medium heat until done and drain. Add tomato sauce and taco mix to meat mixture, stirring well. Place crushed Doritos in bottom of 9×13 inch pan. Top with remaining ingredients in order listed. Bake at 350 degrees for 30-40 minutes.