Mom's Delicious Stuffing

3/4 cup minced onion
1 1/2 cups chopped celery (stalks and leaves)
3/4 cup butter
9 cups bread cubes
1 tsp. salt
1 1/2 tsp. crushed sage leaves
1 tsp. thyme leaves
1/2 tsp. pepper
chicken broth

In a large skillet, cook and stir onion and celery in butter until onion is tender.  Stir in about 1/2 of the bread cubes.  Turn into deep bowl.  Ad remaining ingredients and toss.  Add broth to desired moisture.  Bake in a 9 x 13 pan at 325 degrees covered for 30 minutes.  Uncover and bake for 15 minutes more.