Chicken Divan

"This easy Chicken Divan Recipe combines tender pieces of chicken and broccoli with golden brown mushrooms and shallots in a cheese sauce, all topped with a buttery cracker topping. Chicken Divan takes no time at all to whip up in just a few easy steps. If you are in a big hurry, prepare this chicken casserole a day in advance, but do not add the cracker topping. Store it covered in the refrigerator. When ready to serve, remove it from the fridge about 40 minutes prior to baking to bring it to room temperature. Then, prepare the cracker topping, sprinkle over the casserole, and bake. "