Place the washed and dried mixed greens in a large salad bowl.
If using, arrange the red onion slices and pear slices over the greens.
Sprinkle the blue cheese crumbles evenly across the salad.
Scatter the toasted walnuts over the salad.
Distribute the halved red grapes throughout the salad.
In a small bowl, whisk together the olive oil and balsamic vinegar. Season with salt and freshly ground black pepper to taste.
Drizzle the dressing over the salad.
Gently toss all ingredients until evenly coated with the dressing.
If using, drizzle with honey and garnish with fresh thyme leaves or pomegranate arils.
Serve immediately for the best texture and flavor.