If your bread is fresh, preheat the oven and bake the bread cubes on 2 baking sheets at 250°F for about 30 minutes, stirring half way until the bread is completely firm.
Increase the oven to 350°F.
In a large saute pan over medium heat cook bacon for about 2 minutes. Add butter; when melted add onions, celery, parsley, sage, salt and pepper and saute on medium low until soft, about 5-10 minutes. Remove from heat and let cool a few minutes.
In a medium bowl, combine chicken broth and egg.
In a large bowl add bread and combine with sauteed vegetables. Add chicken broth and egg mixture and combine well. If stuffing is too dry, add a little more broth or water until you have the right consistency.
Spray a casserole with cooking spray, add stuffing. (If making ahead cover with foil and refrigerate).
If making alongside a turkey, pour some of the pan juices from the cooked turkey over the stuffing. Bake uncovered 40 to 45 minutes, or until golden.