Over medium heat melt the butter in a skillet. Add diced celery and onions and sauté until they become translucent.
Stir in the salt, pepper, sage, thyme, and rosemary.
In a large mixing bowl, combine Mrs. Cubbison's Seasoned Cubed Stuffing with the sautéed mixture.
Gradually add chicken or vegetable broth and mix until the stuffing is moist but not overly wet.
Transfer the stuffing to a greased baking dish.
Cover with aluminum foil and bake at 350°F (175°C) for 30 minutes.
Remove the foil and bake for an additional 15 minutes until the top is golden brown.