Diane's Mother's Sage Dressing

3/4 C chopped sweet onion
1 1/2 C chopped celery (leaves and stalks)
1 C butter or margarine
1 tsp salt
10 - 15 slices of a good white bread (pepperidge farms, brownberry, etc)
1 tsp sage, crushed
1 tsp thyme, crushed
1/2 tsp poultry seasoning
1/2 tsp pepper

Melt butter in a large skillet over medium heat. Add onion and celery and stir occasionally until onion is translucent and celery is tender. Remove pan from heat and add half of the bread pieces to the butter mixture. Stir well and pour into a large bowl. Add remaining bread pieces to the pan to soak up any remaining butter and stir well. Add these to the mixture already in the bowl and combine gently so all the bread becomes infused with some of the butter. Add 1/2 tsp salt to start. Add remaining seasonings and mix gently but well. Taste dressing and adjust seasoning if necessary.