Prep Work: To maximize tenderness of chicken, brine chicken tenders (8 hrs.) by marinating them in a brine of salt mixed into water in the ratio of 1 qt. water to 1/4 cup salt. Peel and chop butternut, celery. Scrub carrots; store vegetables all together.
Directions:
Brine chicken tenders in refrigerator. (See Prep Work directly above.)
Cook rice accroding to package directions.
Remove chicken from brine and discard liquid. Set on cutting board and lightly sprinkle on both sides with pepper.
Cut chicken into 1" chunks, then add all ingredients together in crockpot. Set on low heat for 6-7 hours, checking for doneness after 6 hours.
Salt stew to taste and serve over rice. If desired, season with a dash of balsamic vinegar and/or grated Parmesan cheese before serving.