Taco Casserole - cooking recipe

Ingredients

1 lb. hamburger
1 onion
28 oz. can tomatoes
1 pkg. taco seasoning
1/2 pt. sour cream
1/2 lb. Mozzarella cheese, shredded
1/2 lb. Cheddar cheese, shredded
nacho chips

Preparation

Put crushed chips on bottom of 10-inch pan.
Brown hamburger and onion; add seasoning and tomatoes.
Pour on top of chips. Spread sour cream; top with cheeses.
Bake at 350\u00b0 for 30 minutes.