Boil chicken, celery, carrots and onions, ... the chicken. Pour rice on bottom of the buttered casserole. Add gravy mixture, sprinkle ... minutes or until browned.
Spread rice into a greased shallow 3-quart ... Reduce heat. Add chicken, cheese and sour cream. ... crumbs. Sprinkle over casserole. Bake, uncovered, at 425°F ... or until heated through.