From my brother Stevie’s extensive collection of casserole recipes:
Chicken – cooked – diced
Broccoli – cooked
Premium Saltines – crunched up
Cream of Mushroom Soup
Add fresh veggies – onion, green pepper
Layer Saltines, Soup, Chicken, Broccoli, Cheese, and repeat. Put layer of crackers on top. Bake at 425 for 30 minutes or until ingredients bubble.