Orzo & tomato soup - Good Food Middle East

Ingredients

• 2 tbsp olive oil
• 1 onion, chopped
• 2 celery sticks, chopped
• 2 garlic cloves, crushed
• 1 tbsp tomato purée
• 400g can chopped tomatoes
• 400g can chickpeas
• 150g orzo pasta
• 700ml vegetable stock
• 2 tbsp basil pesto
• crusty bread, to serve