Cheesy Chicken with flour

4 cups chicken broth 1 1/2 cups potatoes diced 1 cup celery diced 1 cup carrots diced 1/2 cup onions diced 1/4 cup butter or margarine 1/3 cup flour,[...]

6 ounces dried mostaccioli pasta 2 cups loose pack frozen mixed vegetables 1/2 cup chopped onion 2 tablespoons margarine or 2 tablespoons butter 2 tablespoons[...]

1 (7 ounce) package dried cheese-filled tortellini 1 tablespoon vegetable oil 1 lb boneless skinless chicken breast , cut into thin slices 1/4 cup butter 1[...]