Southern Chicken Tetrazzini (Margaret Murry @ Taste N Tell 1989)

 3 TB butter

1 medium onion, chopped

1 stalk celery, chopped

2 c cut-up chicken

7 oz fine spaghetti

1 tsp salt

1/4 tsp pepper

1 can cream of chicken soup

3 cups chicken broth

1 small can mushrooms

1/2 c Parmesan cheese

1/2 c Mozzarella cheese

Melt butter in a large skillet. Add onions and celery. Cook until clear. Layer chicken over celery and onions. Add spaghetti over chicken. Mix salt, pepper, soup, and broth. Pour over spaghetti, being careful to wet all spaghetti. Place mushrooms on top. Sprinkle with cheeses. Cover and cook until steam escapes. Turn on low and cook 30 minutes. 

Serves 4-6