2 lbs. bag hash browns, thawed
Small carton sour cream
2 cans cream of chicken soup
1 sm. pkg. Mozzarella cheese
1 sm. pkg. Cheddar cheese
1 onion, diced
Salt
1/4 stick melted butter

Mix together in large bowl. Pour into ungreased 9 x 13 pan. Bake at 350 degrees for 1 hour.