Dad's Leftover Turkey Pot Pie - Chefwiz

Ingredients

• 2 cups of peas and carrots (, frozen)
• 2 cups of green beans (, frozen)
• 1 cup of celery (, sliced)
• ⅔ cup of butter
• ⅔ cup of onion (, diced)
• ⅔ cup of all-purpose flour
• 1 teaspoon of salt
• 1 teaspoon of ground black pepper
• ½ teaspoon of celery seed
• ½ teaspoon of onion powder
• ½ teaspoon of Italian seasoning
• 1 ¾ cups of chicken broth
• 1 ⅓ cups of milk
• 4 cups of cooked turkey (, cubed (leftover))
• 2 packages (14.1 ounces each) of pastry for a 9-inch double-crust pie