Balsamic-glazed Chicken with Pearl Onions Recipe

Ingredients

• 2 skinless chicken breasts , halved
• 0.5 lb (227 g) frozen pearl or small white onions , thawed
• 1 green or red bell pepper
• 2 minced garlic cloves
• 1 tbsp chopped fresh rosemary , or 1 tsp dried
• 0.33 cup balsamic vinegar
• 1 tbsp light brown sugar
• 2 tsp olive oil
• 0.5 tsp salt
• 0.5 tsp freshly ground black pepper