Cook celery and onion in butter in a skillet over low heat, stirring occasionally, until onion is tender but not browned. Take off the heat and cool.
Blend bread cubes and seasonings in a large mixing bowl.
Add celery, onion, and butter to the bread cubes; toss lightly to blend.
To moisten the stuffing, pour the broth over the surface of the bread mixture, a small amount at a time, again tossing lightly. Stuffing should be moist but not soggy.
Bake in a 325 degree F., preheated oven for about 45 minutes or until the stuffing is heated through and reaches 165 degrees F. You'll want to cover the stuffing with foil for the first 30 minutes and then remove the foil for the last 15 minutes of baking time.
When baking the stuffing separately, spoon some of the drippings from the turkey roasting pan over the stuffing, if desired.
If you decide to stuff your turkey with this stuffing, the recipe makes enough for the neck and body of a 14-18 pound turkey. (Stuff the turkey first and then follow the cooking instructions for the turkey. Make sure the turkey AND the stuffing cook to 165 degrees F. as shown on a meat thermometer.)