Scalloped Chicken Supper

Scalloped Chicken Supper
1 package (4.9 ounces) scalloped potatoes
1-3/4 cups boiling water
1 can (10-3/4 ounces) condensed cream of chicken soup, undiluted
1/8 teaspoon poultry seasoning
2 cups cubed cooked chicken
1 cup shredded carrots
1/2 cup chopped celery
1/4 cup finely chopped onion
Place the contents of the sauce mix in a large bowl; set the potatoes aside. Whisk in the water, soup and poultry seasoning. Stir in the chicken, carrots, celery, onion and reserved potatoes.
Transfer to a greased 2-qt. baking dish. Bake, uncovered, at 400° for 45-50 minutes or until vegetables are tender.