01 - Heat a dry skillet over medium heat. Add the chopped walnuts and toast for 3–4 minutes, stirring frequently until fragrant and golden brown. Remove from heat and let cool completely.
02 - In a small mixing bowl, whisk together the olive oil, apple cider vinegar, Dijon mustard, honey, salt, and black pepper until emulsified and smooth.
03 - In a large salad bowl, add the baby kale, arugula, and sliced radicchio. Toss gently to distribute the greens evenly.
04 - Arrange the sliced pears and cooled toasted walnuts over the greens.
05 - Drizzle the vinaigrette evenly over the salad. Using salad tongs or large spoons, toss gently to coat all ingredients without bruising the greens.
06 - Top with crumbled blue cheese or goat cheese if desired. Serve immediately while the walnuts remain crunchy and the pears are fresh.