Pan-fried chicken with tomato & olive sauce - Good Food Middle East

Ingredients

• 2 tbsp olive oil
• 2 boneless, skinless chicken breasts
• 1 small onion, halved and very thinly sliced
• 2 garlic cloves, shredded
• 400g ripe tomatoes, finely chopped
• 1 tbsp balsamic vinegar
• 6 pimiento-stuffed green olives, thickly sliced
• 300ml chicken stock
• generous handful basil leaves