This is from a Betty Crocker cookbook.
1 package (10 oz.) frozen peas and carrots (I use fresh when possible)
1/3 cup butter
1/3 all purpose flours
1/3 cup chopped onion
1/2 tsp salt
1/4 tsp pepper
1 3/4 cups turkey or chicken broth
2/3 cup milk
2 1/2 to 3 cups of turkey or chicken
Pastry for 9 inch two crust pie
Rinse frozen peas and carrots under running cold water to separate; drain. Heat margarine in 2-quart saucepan over low heat until melted. Stir in flour, onion, salt and pepper. Cook, stirring constantly, until mixture is bubbly; remove from heat. Stir in broth and milk. Heat to boiling, stirring constantly. Boil and stir 1 minute (until mixture thickens). Stir in turkey and vegetables.
Prepare pastry. Roll 2/3 of pastry into ungreased pie pan. Pour turkey mixture into the pastry-lined pan. Roll remaining pastry and place over filling; turn edges under and flute. Bank in 425 degree oven until golden brown, about 35 minutes.