Cook spaghetti in water and first amounts of oil and salt. Drain. Heat second amount of oil in frying pan. Add beef and onion. Cook. Add mushroom soup, tomato soup, water, seasoned salt and pepper to meat mixture. Simmer, uncovered for 10 to 15 minutes. Add first amount of cheese. Stir to melt. Mix with spaghetti. Put in 2 1/2 or 3 quart greased casserole.
Mix bread crumbs with melted butter. Stir in cheese. Sprinkle over top. Bake uncovered at 350 degrees for 20 to 30 minutes.