1. In a small bowl or cup, whisk the dressing ingredients together until well combined.
2. In a large salad bowl, toss the arugula, walnuts, and cranberries with enough dressing to coat. Divide the salad among four plates and evenly distribute the beets, cheese, and avocado (if using) over the salads. Drizzle with the remaining dressing if desired and serve immediately.
Recommended Wine Style: Sauvignon Blanc