3 summer squash soup with mint and Recipes

unsalted butter , cut into pieces, onion , halved lengthwise and thinly sliced crosswise, salt, yellow summer squash, halved and thinly sliced, carrots, thinly sliced, yellow-fleshed potato (1/2 lb), peeled, halved, chicken stock or reduced-sodium chicken broth, loosely packed fresh mint leaves, loosely packed fresh flat-leaf parsley sprigs, scallion, chopped (1/2 cup), extra-virgin olive oil, water, salt

sized mixed summer squash or zucchini, light-tasting chicken broth, a handful of fresh mint leaves, pine nuts, grated parmesan, salt and pepper to taste, a few drops of extra virgin olive oil