Boil spaghetti for four (4) in 2 quarts of boiling water for 11 minutes. Drain well.
In 2 quart casserole, layer ingredients following:
1 cup grated American cheese, grated
1/2 cup grated onion
1/2 lb mushrooms, chopped fine
1 can mushroom soup (Campbells)
Pam casserole. Put in spaghetti, grated onion, and chopped mushrooms and cheese layer. Season to taste. Save cheese enough to sprinkle on top after you have added the mushrooms soup with 1/2 can of water. Cook until bubbly, in oven, at 325 degrees.