Quick Chicken with noodle

2 boneless skinless chicken breasts (can use beef if you'd like) 2 teaspoons vegetable oil (or 1 tsp. each vegetable and sesame oil) 2 teaspoons bottled[...]

3 (14 1/2 ounce) cans reduced-sodium chicken broth 1/2 medium onion , finely chopped 1 (1 lb) bag frozen mixed vegetables, i.e. broccoli-cauliflower-carrot 2[...]