Oven 350 deg F

Saute the first three ingredients in butter until tender 5-10 minutes.
Add flour, stir until smooth. cook 1 min stirring cont.
Add chicken broth and milk, cook, stirring until thickened 10-15 mins.
Stir in chicken, peas salt and pepper.
Cool before filling pie crusts. VERY important.
Bake 30-45 mins.