Minestrone Soup with cannellini

1 ounce butter 1 gallon chicken stock 1 tablespoon olive oil 1 bay leaf 1/2 lb carrot (1/2-inch cubes) 1/4 lb tomato (1/2-inch cubes) 1/4 lb celery (1/2-inch[...]

3 cups reduced-sodium vegetable or chicken broth 1 (28-ounce) can diced tomatoes 1 (15-ounce) can white (cannellini or navy) beans, drained 2 carrots , peeled[...]

2 lbs Italian sausage 2 tablespoons olive oil 1 medium onion , peeled and diced 1/2 lb carrot , peeled and chopped into coins 2 small zucchini , halved and[...]