This gorgeous pasta salad is quick to prepare and loaded with fresh vegetables. Prepare it in advance and bring it along to backyard grilling parties, summer picnics, and family gatherings. The addition of agave brings a sweetness to the vinaigrette mix that pairs perfectly with the peppery watercress and creamy goat cheese. Serve as a tasty side dish, enjoy it with some garlic butter baguette on the side, or add grilled chicken to make it an entree-sized salad.