Add butter and olive oil to a stock pot over medium heat. Saute carrots, celery and onions for 5 minutes. Add seasonings to taste.
In a large bowl, combine stuffing, flour and egg and mix together. Form into dumplings the size of golf balls.
Add in stock and bring to a simmer, then add in turkey and dumplings and simmer for 5 minutes or until heated through.
You can skip the carrots/celery/onion or add in what you have on hand. Any prepared veggies should added in at the end (green beans, peas, etc.) for the last stage of simmering. Taste test your soup before adding seasonings, as the prepared foods you're adding may have enough and you can never make a salty dish less salty!