1Spray 12-inch nonstick skillet with cooking spray; heat over medium-high heat. Add chicken, garlic and gingerroot; stir-fry 2 to 3 minutes or until chicken is brown.
2Add onion, carrots, 3/4 cup of the broth, the soy sauce and sugar. Cover and cook over medium heat 5 minutes, stirring twice.
3Add broccoli, mushrooms and bell pepper. Cover and cook about 5 minutes, stirring occasionally, until chicken is no longer pink in center and vegetables are crisp-tender.
4Mix cornstarch with remaining 1/4 cup broth; stir into chicken mixture. Cook, stirring frequently, until sauce is thickened. Serve over noodles.