Betty'S Chicken Casserole - cooking recipe

Ingredients

1 to 1 1/2 c. shredded cheese
2 c. cooked chicken, chopped
2 c. cooked rice
1 can mushrooms
1/2 stick margarine
1 small onion, chopped
1 tsp. celery salt
2 cans cream of chicken soup

Preparation

Saute onion in butter.
Mix everything together.
Top with shredded cheese. Bake at 350\u00b0 for 30 minutes.