01 -
Use a sharp knife or a mandoline to slice the apples, fennel, and red onion into thin pieces.
02 -
Put the walnuts or pecans in a dry pan over medium heat for 2–3 minutes until they smell fragrant.
03 -
In a small bowl, whisk together the olive oil, orange juice, lemon juice, Dijon mustard, maple syrup (or honey), salt, and pepper until it comes together smoothly.
04 -
In a large mixing bowl, combine the apples, fennel, red onion, and greens. Add the dressing, tossing until everything is coated.
05 -
Sprinkle the toasted nuts, Parmesan, and fennel fronds over the top as garnish.
06 -
Serve right away as a side dish, light main meal, or starter.