Out of several we have, this is one of our favorites. A note of caution... It'll serve between 8 to 10 people, so you can either halve the recipe... but we make it as is so we can freeze the left over which works very well. We use our home canned tomatos from the garden but one can use store-bought just as well. Additionally, we've found (we're in the U.S.) that a small tablespoon of sour cream as a topping just as it's dished up is a nice touch and adds a little zing...
Tuscan Tomato Soup
1/4 cup olive oil
4 tablespoons (1/2 stick) butter
4 carrots, peeled and finely diced
4 stalks celery, finely diced
3 medium onions, finely minced
3 quarts canned tomatoes with juice or 14 large, ripe fresh tomatoes, peeled, seeded, and coarsely chopped
1/2 cup finely chopped parsley
6 leaves fresh basil, optional
Salt and freshly ground pepper
Directions
Heat the oil and butter in a heavy kettle. Cook the carrots, celery, and onions for about 20 minutes, or until very tender. Add the tomatoes and continue cooking over moderate heat for 25 to 30 minutes longer. Stir in the parsley and basil, season with salt and pepper, cook a minute or so longer, and serve hot.