SAUCE:

Combine in pan to simmer for 20 minutes:

1/2 cup chopped onions
1 can tomato paste
1 cup water

Combine and blend:

1 1/2 lb. hamburger
1 egg
1 c. soft bread crumbs
2 tsp. salt
1 tsp. oregano
1/2 tsp. Italian seasoning
1/2 c. prepared sauce

Bake at 375 degrees for 50 minutes, pour remainder of sauce over meat, arrange sliced Mozzarella cheese on top, bake for 15 minutes longer.