Easy Spicy Bean Soup

Heat the olive oil in a large saucepan over a medium heat. Add the onion, carrot, celery and a large pinch of salt (this will stop the vegetables browning) and sauté for 4 minutes, then add the garlic and continue to sauté for a further minute.
Add the peppers and courgettes and continue to sauté the vegetables for a further 2 minutes, stirring continuously.
Add the borlotti beans, chipotle chilli paste and vegetable stock, cover and simmer for 15 minutes. [If making this soup in advance, take it to this stage and stop. Then cool and store in the refrigerator until you are ready to finish the soup and serve].
Add the tomatoes to the pan, along with the seasoning, and cook for a further minute.
Serve with a garnish of freshly chopped coriander and a wedge of fresh lime.