1) In a medium-sized saute pan add the sliced shallots with a drizzle of oil and slowly cook over medium heat until well caramelised, about 5 to 6 minutes. Stir in the diced pear and cook down until pulpy.
2)Carefully add the pear mixture to a blender along with the verjus, honey, 1/2 cup grapeseed oil, salt and pepper, to taste. Puree until smooth adding a little water to thin if necessary; it should be the consistency of a thick vinaigrette. Set aside in the refrigerator to cool.
3) Wash all the greens and remove the stems. Tear the leaves into bite-size pieces and dry well. In a large bowl or platter add the leaves and toss. Pour the dressing over the salad, and toss gently. Garnish with Parmesan, toasted walnuts and pear slices.