For an extra layer of flavor, consider adding toasted slivered almonds or sunflower seeds for crunch. If you prefer a leaner dressing, you can substitute Greek yogurt for the ranch dressing and add a touch of honey for sweetness. To prevent the avocado from browning, toss it with a squeeze of lime juice before adding it to the salad. This salad is best enjoyed fresh. If making ahead, store the dressing separately and toss just before serving.