I remember having a casserole similar to this in the lunchroom at school. I have also had a casserole like this with just the veggies and no chicken. Either way you need to make this casserole at home soon. It comes together really quick. If you have leftover chicken it is that much faster. You can also make this ahead of time and leave the crackers off the top and freeze it.
One dish and you have all your veggies for the day. You could also probably try this with different veggie combinations.
Veg-All Chicken Casserole
2 cups cooked chopped chicken
16 oz mixed vegetables, drained
8 oz chopped water chestnuts
1 onion chopped
1 cup grated cheese
1/2 to 1 cup mayo I used light
1/2 to 1 cup sour cream I used light
1 stick butter melted
1 sleeve crackers crushed
Preheat oven to 350. Bake for 30 minutes.