Balsamic Chicken

1 lb boneless, skinless chicken breast
2 Tbs olive oil
1 C chopped onion
t tsp brown sugar
1 28 oz. can diced tomatoes, partially drained
3 Tbs balsamic vinegar
1/4C fresh basil, chopped

Cut chicken into 1 inch strips. Brown in oil. Add 10 turns of freshly ground black pepper to chicken as it is frying. Add onions and sugar to pan. Fry until chicken is cooked through and onions are tender. Add tomatoes and vinegar and simmer for a couple minutes. Add basil and season to taste with salt. Serve over pasta.