Pre heat your oven to 180c.
First, roast the peppers and aubergine by adding them with the oil and salt to a baking tray. Bake for approximately 25 minutes or until roasted.
In the meantime–add the oil and onion to a wide bottom pan and fry gently on a low heat for around 10 minutes until soft and browning. Add the garlic and spices and fry for 30 seconds more.
Add the tomatoes and harissa to the pan and cook for 5-10 minutes until the tomatoes have softened.
Now add the water, miso, tamari and cook on a low heat for 15 minutes.
Add the beans, roast veg, salt, black pepper and optional maple syrup to the pan and simmer for a further 5 minutes