2 lbs. hamburger
1 med. onion, chopped
1 can cream of chicken soup
1 (8 oz.) sour cream
1 (8 oz.) pkg. shredded cheddar cheese
1 (8 oz.) pkgs. shredded Mozzarella cheese
1 can crescent dinner rolls

Brown hamburger and onions; drain. Mix hamburger, soup, sour cream and pour in Pyrex dish. Top with both cheeses and then put crescent rolls on top. Bake at 350 degrees until crust is brown.