How to Make It
Combine first 6 ingredients in a large bowl, stirring with a whisk. Add apple, celeriac, and celery; toss to coat. Add grapes; toss.
Place 1/2 cup arugula on each of 6 plates. Spoon 1 cup fruit mixture over arugula on each plate. Sprinkle evenly with walnuts.
Cooking Light Lighten Up, America!