Preheat oven to 350°F. Combine cranberries with one cup of turkey broth and set aside. Add butter to skillet and melt. Add veggies and sauté until soft; about 10 to 15 minutes. Place bread cubes from stuffing mix in medium-large bowl. Add cooked veggies to bowl; add broth with cranberries; add chopped chestnuts and mix well. Add additional broth, one cup at a time, and continue to mix until all bread is moist. Season with pepper. Add contents of seasoning packet, to taste, and mix until well combined. Place in a 9" x 13" (approx. 4 qt.) casserole dish and bake for 35 to 45 minutes.