01 - 
                Preheat your oven to 350°F. Lightly spray a 9x13-inch baking dish with nonstick cooking spray.
              
              
              
                02 - 
                In a medium bowl, combine the rice, cream of mushroom soup, cream of chicken soup, and chicken broth. Stir well until smooth, then pour into the prepared baking dish.
              
              
              
                03 - 
                Place the chicken breasts on top of the rice mixture. Sprinkle with salt and pepper to your liking.
              
              
              
                04 - 
                Evenly sprinkle the dry onion soup mix over the top of the chicken and rice mixture.
              
              
              
                05 - 
                Cover the dish tightly with foil and bake for 1 hour and 15 minutes. Do not remove the foil while baking—no peeking!
              
              
              
                06 - 
                Once done, let the casserole sit for 5 minutes before serving. The chicken should be tender and the rice cooked through.