Sauté onion, celery, and carrot in butter for 10 minutes. Add flour to sautéed mix-
ture, stirring well. Cook 1 minute, stirring constantly. Combine broth and half &
half, gradually stir into vegetable mixture. Cook over medium heat, stirring con-
stantly until thickened and bubbly. Stir in salt and pepper. Add chopped chicken,
stirring well.
Pour chicken mixture into a shallow 2-quart casserole. Top with pastry. Cut slits
to allow steam to escape. Decorate with pastry cut outs.
Bake at 400 degrees for 40 minutes.