This soup is really good. It makes a huge pot and I've been having it for lunch all week. I didn't have any pesto but I would recommend it's use for the additional flavour boost. Summer squash was omitted, the chicken broth option was taken and chickpeas were used in place of the navy bean. Other than that the recipe was prepared as written. Made for Holiday Tag.
I used reduced-fat, reduced-sodium chicken broth, and later added some vegetable broth after cooking some asparagus. I used half a green cabbage, that I chopped finely. Not a whole head of celery. I omitted the leek. I added maybe 2 tablespoon of pesto. It's healthy and great. Thanks Halcyon Eve. Made for Holiday tag.