1 lb. hamburg
1 onion, chopped
1 qt. spaghetti sauce
1 lb. spaghetti, cooked
3/4 stick butter
1/2 pkg. Philadelphia cream cheese
2 c. Mozzarella cheese
1-2 tbsp. milk

Brown meat and 1/2 onion, mix in sauce, toss with cooked, cooled spaghetti. Spread in a 9"x13" pan. Lower heat, cook other half of onion and butter, cream cheese, sour cream and milk. Spread over spaghetti, top with Mozzarella cheese. Can be frozen or bake 30 minutes at 350 degrees.