For a vegan option, substitute the goat cheese with a plant-based alternative or omit it altogether. If you don't have a spiralizer, you can thinly slice the beet and sweet potato into matchsticks. Feel free to add other vegetables to the salad, such as roasted Brussels sprouts or butternut squash. The pistachio vinaigrette can be made ahead of time and stored in the refrigerator for up to 3 days. For an extra touch of elegance, garnish the salad with fresh herbs, such as thyme or rosemary.