In a large skillet, melt butter.
Whisk in flour for one minute.
On low, add stock and whisk.
Whisk in the milk and cream cheese until smooth and melted.
Add salt and pepper and pour into a bowl.
Clean out skillet and add butter.
Saute onions, garlic, carrots and peas a few mins.
Remove heat and add chicken.
Stir in the sauce and set aside.
Roll out crust and lay in 9 inch pie pan.
Add filling.
Roll out second crust and top it.
Crimp sides and make 4 slashes.
Beat an egg and brush on top.
Bake at 400 for 30 mins.
(If getting too brown, lower to 375)