01 -
In a small bowl or jar, whisk together olive oil, lemon juice, a generous pinch of salt, and a pinch of black pepper. Taste and adjust seasonings if necessary, then set aside.
02 -
Place walnuts in a dry skillet over medium-high heat. Stir frequently until the walnuts are fragrant and lightly browned, approximately 2-3 minutes. Remove from heat and set aside to cool.
03 -
Trim the root ends from the fennel bulbs. Remove and reserve the fronds. Using a mandoline or sharp knife, slice the fennel bulbs as thinly as possible. Roughly chop the reserved fennel fronds.
04 -
Cut the apple into quarters, leaving the core behind. Using a mandoline or sharp knife, slice the apple quarters into thin slices.
05 -
In a large mixing bowl, combine arugula, sliced fennel, apple slices, and chopped fennel fronds. Gently toss to distribute ingredients evenly.
06 -
Drizzle the reserved dressing over the salad. Toss thoroughly to ensure the greens and produce are evenly coated. Adjust seasoning with additional salt and pepper if needed.
07 -
Transfer salad to serving dish. Top with toasted walnuts and shave pecorino or parmesan cheese over the salad using a vegetable peeler. Serve immediately.