Preheat oven to 350.

In 5-quart saucepan combine soup, water, margarine, celery, onions, and poultry seasoning. Bring to boil and remove from heat.

Stir in cornbread stuffing mix.

Bake stuffing in 1-1/2 quart casserole coated with non-stick vegetable cooking spray.

Bake, covered, at 350 degrees F. 45 minutes or until set.