Grilled Vegetable Salad with Orzo and Herb Pesto Vinaigrette
10 ounces orzo (about 1 1/2 cups) 6 1/2 tablespoons extra-virgin olive oil, divided 2 medium zucchini or summer squash, cut lengthwise into 1/4-inch-thick slices 8-10 asparagus spears, ends [...]