This roasted fennel and beet salad is a vibrant and flavorful dish that combines the earthy sweetness of roasted beets with the aromatic and slightly licorice-like flavor of roasted fennel. The beets and fennel are tossed with a tangy vinaigrette made with lemon juice, olive oil, and Dijon mustard, which adds a refreshing and zesty element to the salad. Topped with crumbled goat cheese and toasted walnuts, this salad is a perfect balance of flavors and textures.