Add coarsely chopped walnuts to 1 cup of boiling water and let stand for 5 minutes.
Add the drained walnuts along with the rest of the dressing ingredients to a high speed bender and blend until smooth.
Toss greens in large bowl with enough dressing to coat. Taste and add additional salt and pepper if desired and toss again.
Divide greens among plates. Arrange pear slices on top of each plate. Drizzle with a little additional dressing. Sprinkle with desired amount of toasted or candied walnuts and serve.