Combine all ingredients in a 2 quart casserole dish, top with grated sharp cheddar cheese, bake at 400 degrees for 20 minutes, until heated through and cheese on top is bubbly
(I like to bake it until the cheese is browning).
Can be doubled and baked in a 9x13 baking dish. Also, can be assembled in advance and frozen or refrigerated until ready to bake.
A variation -- I have been making it using broccoli instead. I also sprinkle ground pork rinds on top of the cheese topping (I use colby/monterey cheese mix) -- this makes it nice and crunchy! If you buy pre-cooked chicken and pre-cleaned/cut broccoli, it only takes about 15 minutes to put together this great dish.