In a large salad bowl, add fresh arugula as the base. Core and thinly slice large apples and toss with arugula.

Preheat a skillet over medium heat. Add walnuts and toast for 3–5 minutes until golden brown.

Thinly slice half of a red onion and add it to the salad bowl.

Crumble feta cheese over the salad mixture.

In a mixing bowl, combine olive oil, apple cider vinegar, honey, salt, and pepper. Whisk until emulsified.

Drizzle dressing over salad and gently toss to combine.

Serve immediately to enjoy freshness.