Low-Glycemic Pizza-Topped Chicken Breast

食材

• ½ small red onion, finely chopped
• ½ red pepper, deseeded and chopped
• 1 small garlic clove, crushed
• Low-calorie cooking spray
• 2 on-the-vine tomatoes, chopped
• 1 tbsp canned chopped tomatoes
• 1 tsp tomato purée
• 1 tsp dried oregano
• 1 skinless and boneless chicken breast
• 40g reduced-fat Cheddar, grated
• 1 cherry tomato, halved
• 1 tsp finely chopped fresh basil