1 (10 oz.) pkg. egg noodles
1 1/2 lb. hamburger
1 onion
1 lb. shredded Mozzarella cheese
2 (10 1/2 oz. each) cans pizza sauce with cheese
1 can mushrooms

Cook noodles; drain. Fry hamburger and onion. Drain. Put noodles in bottom of 2 casserole dish (2 quarts each). Add one can sauce, then half of the cheese, then hamburger/onion, then mushrooms. Put last can sauce on then rest of the cheese.

Bake at 375 degrees for 1 hour, covered.