COMBINE chicken, broth, onions, celery and carrots in slow cooker; cover with lid.
COOK on LOW for 8 to 10 hours (or on HIGH for 3-1/2 hours).
ADD peas and cream cheese spread; stir until well blended. Mix egg, stuffing mix and water until well blended. Drop stuffing mixture, 2 heaping tablespoonfuls at a time, onto chicken mixture in slow cooker. Cook, covered, an additional 30 min on HIGH. Turn off slow cooker. Let stand 15 min. before serving.
