2 lbs. hamburger, browned, salt & pepper to taste
1 (45 oz.) can ravioli
1 (16 oz.) spaghetti sauce
Mushrooms, fresh or canned
2 boxes frozen spinach, chopped, drained
1 c. sliced onion
1 c. shredded Mozzarella cheese

Layer ingredients in large oblong pan, starting with onions, hamburger, spinach, mushrooms, ravioli, spaghetti sauce and top with shredded cheese. Bake at 325 degrees for 1/2 hour, covered and 1/2 hour, uncovered.