Spray a 9 x 13 baking dish with nonstick spray add the cut up vegetables in to the baking dish along with the rice and chicken broth stir well cover tightly with aluminum foil and bake for 1 hour and 14 minutes.
After the cooking time is up remove from the oven and turn the oven to 400 degrees F now. Remove the aluminum foil. Add in to the baking dish the uncooked chicken, heavy cream and cheese stir well. Combine the panko breadcrumbs and melted butter together in a small bowl. Sprinkle the panko mixture over the top of the casserole and bake for an additional 20 to 25 minutes or until the chicken has cooked through.