Chicken Pot Pie
["1 c. chopped onion", "1 c. chopped celery", "1 c. chopped carrots", "2 c. chicken broth", "1 c. half and half", "1/3 c. melted margarine", "1/2 c. plain flour", "1 tsp. salt", "1/4 tsp. pepper", "4 c. chicken", "basic pastry"]
["Saute onion, celery and carrot in margarine for 10 minutes. Add flour to sauteed mixture, stirring well; cook 1 minute, stirring constantly. Combine broth and half and half. Gradually stir in broth mixture; cook over medium heat, stirring constantly, until thickened and bubbly. Stir in salt and pepper. Add chicken, stirring well. Pour chicken mixture into a shallow 2-quart casserole. Top with pastry; cut slits to allow steam to escape. Bake at 400\u00b0 for 40 minutes or until crust is golden brown."]
["onion", "celery", "carrots", "chicken broth", "margarine", "flour", "salt", "pepper", "chicken", "pastry"]