Whisk together the oil, vinegar and salt and pepper in a small bowl. Combine the arugula and sliced fennel in a medium salad bowl. Pour the vinaigrette over and toss to thoroughly coat. Season with salt and pepper. Scatter the fennel fronds, cheese and pine nuts on top and serve.
Adapted from "One Dish at a Time: Delicious Recipes and Stories from My Italian-American Childhood and Beyond" by Valerie Bertinelli © Rodale 2012. Provided courtesy of Valerie Bertinelli. All rights reserved.