Cut your pear into quarters, remove the core, then slice or dice it into bite-sized pieces. I like to leave the skin on for extra color and texture, but you can peel it if you prefer a softer bite.
Place your chopped walnuts in a dry skillet over medium heat for 2 to 3 minutes, stirring often. This step is optional, but toasting brings out a much deeper, richer flavor than raw walnuts.
In a small jar, combine the olive oil, vinegar, honey, Dijon mustard, salt, and pepper. Shake it vigorously until the dressing looks smooth and slightly thickened, with no separation.
In your large bowl, add the arugula, sliced pear, walnuts, and dried cranberries. Toss everything together gently so the pear stays intact and doesn't get crushed by the greens.
Drizzle the vinaigrette over the salad and toss lightly to coat the leaves. Sprinkle the crumbled gorgonzola over the top last so it doesn't get mixed in too much, then serve right away.