01 - Preheat the oven to 400°F.
02 - Wrap each beet individually in aluminum foil and place on a baking sheet. Roast for 35 to 40 minutes until tender when pierced with a fork. Remove from the oven and allow to cool.
03 - Peel the cooled beets and slice into wedges or cubes as preferred.
04 - Toast walnut halves in a dry skillet over medium heat for 3 to 4 minutes, stirring frequently until aromatic. Remove from heat and let cool.
05 - Whisk together extra virgin olive oil, balsamic vinegar, Dijon mustard, honey, salt, and freshly ground black pepper in a small bowl until combined.
06 - Toss arugula with half of the dressing in a large bowl, then arrange on serving plates or a platter.
07 - Top the dressed arugula with roasted beets, sliced red onion, toasted walnuts, and crumbled goat cheese if desired. Drizzle remaining dressing over the salad.
08 - Serve immediately to enjoy the freshest flavors.