Twice Baked Spaghetti

12 oz. spaghetti, cooked
2 eggs
1 cup Parmesan cheese, grated
1 lb hamburger or sausage (I like to mix 1/2 and 1/2)
2 cans petite diced tomatoes
1 sm. can mushroom, sliced (optional)
1 sm can olives, sliced
3 c. mozzarella cheese, grated
1/2 onion, diced
1 can cream of mushroom soup
1/2 - 1 c. milk

Brown meat and onion. Add tomatoes, juice and all, mushrooms and olives. Let simmer 5 minutes. In a 9x13 dish mix spaghetti, eggs and parmesan cheese. pour meat mixture over spaghetti. Cover with cheese. In a bowl combine soup and milk. Pour mixture over casserole and bake at 350* 45-60 minutes.