Preheat oven to 350 degrees.
In a medium bowl, combine the cooked chicken, onion mix, cream of mushroom/chicken soup, milk, sour cream, water, rice, and salt/pepper.
Spray a 9x13 baking pan with cooking spray.
Pour chicken/rice mixture into prepared pan.
Cover pan with aluminum foil.
Place pan in preheated oven and cook for 45 minutes.
Remove foil and cook an additional 15 minutes.
Remove from oven and serve! Enjoy!
