Meanwhile, mix Herbed Salad ingredients, stirring well; set aside. In 2-quart saucepan, heat 2 cups water to boiling. Add quinoa; cook 10 minutes. Drain well. Arrange on another ungreased cookie sheet; toss with 2 teaspoons oil. Place cookie sheet of quinoa in oven with sweet potatoes during last 10 minutes of bake time to toast lightly, stirring once.