How to Make It
Preheat oven to 400°F. Melt butter in a large heavy saucepan over medium-high. Add celery and onion, and cook, stirring often, until softened, about 6 minutes. Add flour, and cook, stirring constantly, 1 minute. Slowly stir in broth. Reduce heat to medium, and cook, stirring constantly, until mixture is thickened and bubbly. Stir in chicken, vegetables, hard-cooked eggs, salt, and pepper. Transfer mixture to a lightly greased 11- x 7-inch (2-quart) baking dish.
Place the Pastry on a lightly floured surface, and roll out into a 1/8-inch-thick rectangle. Cut Pastry into 3/4-inch-wide strips, and arrange strips in a lattice design over the top of the chicken mixture. Lightly brush Pastry strips with beaten egg.
Bake in preheated oven until golden brown and bubbly, 35 to 40 minutes.
Recipe Revival, Oxmoor House, copyright 2016.