Preheat oven to 350°F. Spray a 13×9-inch casserole dish with no-stick cooking spray and set aside.
Add the cream of chicken soup, cream mushroom soup, chicken stock and onion soup mix to a large bowl. Mix until smooth.
Add in the uncooked rice and stir until it is evenly mixed.
Pour the rice mixture into the prepared baking dish and spread it out evenly.
Season the chicken with a pinch of salt and pepper on both sides. Place the chicken on top of the rice mixture evenly spaced.
Cover the baking pan tightly with aluminum foil and bake for 1 hour and 15 minutes (Don’t Peek!) check and make sure the rice is tender and the chicken is cooked through. (the internal temperature of the chicken should be 165 degrees when measured with a meat thermometer)
Remove from the oven and let sit for 5-10 minutes before taking the foil off.
Slice or shred the chicken, serve and enjoy!