In a large dutch oven, saute the celery, carrots and onions in butter, until onions begin to become translucent. Stir in flour.
Stir in chicken broth, poultry seasoning, onion powder, garlic powder, salt and parsley. Cover and bring to a boil. Add chicken and broccoli, cover and return to a boil.
In a medium bowl, combine flour baking powder and salt. Using a pastry blender cut the butter into the flour mixture until it resembles cornmeal. Stir in milk.
Drop dumpling mixture into the boiling pot one tablespoon at a time. Reduce heat at simmer for 10-15 minutes.
Notes
*The Nutritional Facts that have been calculated on this recipe are only estimates.