01 - Toast the walnuts or pecans in a dry skillet over medium heat for 3 to 4 minutes, stirring frequently until fragrant. Set aside to cool.
02 - In a small bowl, whisk together olive oil, apple cider vinegar, Dijon mustard, honey or maple syrup, minced shallot, salt, and freshly ground black pepper until emulsified.
03 - In a large bowl, mix the winter greens, thinly sliced pears, and half of the toasted nuts.
04 - Drizzle the vinaigrette over the salad mixture and toss gently to evenly coat all ingredients.
05 - Transfer the salad to a serving platter or individual bowls. Top with the remaining nuts and crumbled cheese if desired.
06 - Serve the salad immediately to maintain crispness and freshness.