Cook onion in olive oil until tender, about 3-4 minutes. Add flour and cook 1 minute.
Stir in carrots, celery, turkey, broth, poultry seasoning, bay leaf and salt and pepper to taste. Simmer 10 minutes.
Add noodles and cook 8-10 minutes or until tender. Remove from heat, discard bay leaf and stir in parsley.
Season to taste and serve.
(Nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.)