Created by Felix4067 on February 26, 2014
Step 1: Preheat oven to 325F; spray a 9x13-inch baking dish with nonstick cooking spray.
Step 2: Combine soups, milk, stock, and pepper in a medium saucepan over medium heat; cook, stirring frequently, until warm and smooth (about 15 minutes).
Step 3: Stir celery, mushrooms, onion and rice into soup mixture; spread soup mixture over bottom of prepared pan.
Step 4: Lay thighs on top of rice mixture, skin side up. Sprinkle with onion soup mix.
Step 5: Cover pan tightly with foil and bake for 2 hours, until juices run clear when chicken is pierced with a fork.