Chicken Pot Pie

1/3 cup butter
1/3 cup flour
1/3 cup chopped onion
1/2 tsp. salt
1/4 tsp. pepper
1 3/4 cup chicken broth
2/3 cup milk
1 cup cooked diced potatoes
1 pkg. frozen broccoli and carrots

Prepare 2-crust pie crust. Saute butter, flour, and onion until bubbly. Add salt, pepper, chicken broth, and milk. Stir until well thickened. Add potatoes, broccoli/carrots. Put top crust on pie and bake @ 425 degrees for 30 minutes.