Heat the olive oil in a large saucepan. Sauté the onion, peppers, and garlic for about 5 minutes. Add the fresh tomatoes and cook for another 3-4 minutes.
Add the tinned tomatoes, the stock and 1 (250ml) cup of water. Bring to the boil, reduce the heat and simmer for 30 minutes.
Remove from the heat and allow to cool a little. Purée the soup in batches in a food processor or with a hand-held blender. Strain through a coarse sieve and add a little extra stock, if desired.
Roasting the vegetables gives the soup a delicious flavour. Simply halve the onions, tomatoes and peppers, place them on a lined baking tray. Drizzle with a little olive oil and roast in a 200°C (gas mark 6) oven for 60 minutes, turning the onions and peppers once. Next, peel the skin from the cooked peppers and tomatoes. Add the vegetables to the soup.
Season to taste with salt and freshly ground black pepper. Serve hot, and garnished with the basil and a drizzle of extra virgin olive oil. Serve Hot with bread.
