I have not tried this recipe yet, but here is an emergency stuffing substitution that does not use bread.  BREADED stuffing is about 30 plus grams of carbs per half cup.  Chestnuts alone are that amount, but mixed in with the vegetables, you might be looking at 10-20 (at the most) grams of carbs per half cup.  This is a much healthier, gluten-free and wheat-free way to go to have stuffing.  And Dr. Mercola approves of it.