1 pound skinless, boneless chicken breast halves - cubed
1 cup sliced carrots
1 cup frozen green peas
½ cup sliced celery
⅓ cup butter
⅓ cup chopped onion
⅓ cup all-purpose flour
½ teaspoon salt
¼ teaspoon black pepper
¼ teaspoon celery seed
1 ¾ cups chicken broth
⅔ cup milk
2 (9 inch) unbaked pie crusts
Slowly stir in chicken broth and milk.
Reduce heat to medium-low and simmer until thick, 5 to 10 minutes. Remove from heat and set aside.
Place chicken and vegetables in the bottom pie crust. Pour hot liquid mixture over top.
Cover with top crust, seal the edges, and cut away any excess dough. Make several small slits in the top crust to allow steam to escape.
Bake in the preheated oven until pastry is golden brown and filling is bubbly, 30 to 35 minutes. Cool for 10 minutes before serving.
Serve immediately and enjoy!