01 - Heat oven to 400°F (200°C).
02 - Wrap each beet individually in aluminum foil and place on a baking sheet. Roast 40 to 50 minutes until tender when pierced with a knife.
03 - Unwrap beets and allow to cool slightly. Peel off skins and cut into wedges or bite-sized cubes.
04 - In a dry skillet over medium heat, toast walnut halves for 3 to 4 minutes, stirring frequently until fragrant. Remove from heat and cool.
05 - Whisk together olive oil, balsamic vinegar, Dijon mustard, honey, salt, and pepper in a small bowl until emulsified.
06 - Arrange mixed greens on serving plates. Top with roasted beet pieces, toasted walnuts, and crumbled goat cheese.
07 - Drizzle salad with the vinaigrette and garnish with chopped chives or parsley if desired.
08 - Serve immediately for best freshness.