1 (32 oz.) spaghetti sauce
2 lbs. hamburger
1/2 lb. lasagna noodles, uncooked
1 or 2 cans mushrooms
1 onion
Big Mozzarella cheese
Parmesan cheese
American cheese, grated
1 c. water

Spread 1 cup sauce in 9 x 13 inch pan. Layer 1/3 of each of the remaining ingredients in turn, repeating until all are used up. When layered, pour water around edges. Cover tightly with foil. Let stand in refrigerator 2 to 24 hours. Bake at 350 degrees for 1 hour, covered, and another 15 minutes uncovered.