Spray bottom of 8x10 inch baking dish with cooking spray.
Place a layer of bread on the bottom of the dish, aiming for the bread to be about 1 inch thick (or 4 to 5 dinner rolls cut in half).
Pour turkey gravy over bread
Add a layer of shredded turkey
Mix up your stuffing for the top layer:
In a separate mixing bowl, combine the Stuffing mix, sour cream, soup and water. Mix well to combine and be sure all of stuffing is moistened. Layer the stuffing mix on top of shredded turkey.
Cook 30 minutes at 375°F, uncovered until last 5 to 10 minutes. If it's browning too much, cover with foil.
Let stand for 5 to 10 minutes, then serve