Summer Squash Soup with Parsley Pistou
For squash soup: 3/4 stick (6 tablespoons) unsalted butter, cut into pieces 1 medium onion, halved lengthwise and thinly sliced crosswise 1/2 teaspoon salt 3-4 yellow summer squash, halved and thinly sliced 2 carrots, thinly sliced 2-3 new potatoes Read on!