Tomato Broccoli Chicken

4 boneless skinless chicken breast halves

1 c chopped onion

1 tbsp olive oil

1 14.5oz can diced tomatoes w/basil, garlic and oregano

2 c broccoli florets

1 c mozzarella cheese -- shredded

Brown chicken and onion in olive oil in skillet, about 3 minutes per side. Add tomatoes to skillet. Bring to boil; reduce heat. Simmer, uncovered, 5 minutes. Add broccoli; simmer 5 minutes more or until chicken is done and broccoli is tender.

Top with cheese during last 2 minutes. Serve over pasta or rice, if desired.