Place the mixed vegetables on a cooking sheet and roast in a oven for 5 to 10 minutes until browned slightly. In sauté pan, heat 1 tablespoon of butte. Add the onion and celery; sauté until tender. In another saucepan, heat the broth and milk.
Add two more tablespoons of butter to the celery mix to cook out all the water. After the water is cooked out, add the flour and curry to celery mix and cook for 1 to 2 minutes. Whisk in hot milk mixture and cook until thickened.
Add the parsley, salt, and pepper; toss in the browned vegetables and the chicken.
Pour in a shallow baking pan and top with 6 to 8 puff pastry sheets that have been cut into circles. Place in oven and cook until the puff pastry has browned and the mixture is hot and bubbly about 25 minutes.