Place arugula in bottom of large salad bowl or serving platter with high sides.
Arrange sliced pears over arugula, followed by walnuts, sliced red onions, cheese, and pomegranate.
Drizzle salad with ¼ cup of Maple Mustard dressing, and serve the remainder of the dressing alongside.
Salad, without dressing, will keep in an airtight container in the refrigerator for one day. Once dressed, leftover salad does not keep well because the arugula will get soggy.