Gather all ingredients. Preheat the oven to 400 degrees F (200 degrees C). Grease sides and bottom of a casserole dish.

Stir chicken, water, rice, cream of chicken soup, cream of celery soup, and cream of mushroom soup together in the prepared casserole dish; season with salt and pepper.

Arrange butter evenly over the top of the chicken mixture.

Bake in the preheated oven until the rice is tender and the chicken is cooked through, 60 to 75 minutes.

Cool 10 to 15 minutes before serving. Enjoy!