Dry the walnuts in a pan and let them cool. Combine wine vinegar, olive oil, salt, and honey. Chop the parsley leaves and mix with the dressing.
Cut the Brussels sprouts into thin slices. Core the apple and cut it into thin slices. Chop the nuts with a knife.
In a bowl, combine the chopped apple, Brussels sprouts, and nuts. Pepper the Brussels sprouts salad, apples, and nuts add the parsley dressing, and stir.
Salad with Brussels sprouts, apples, and nuts is ready. When serving in bowls, sprinkle the salad with parsley leaves and add thinly sliced Parmesan cheese.