Roast the nuts in a pan without fat, take them out. Wash the arugula and shake dry. Grate cheese. Mix vinegar, mustard, salt and pepper. Fold in the oil.
Cut the beetroot into very thin slices. Spread the beetroot on two plates like tiles. Wash the pear, remove the seeds and dice finely. Spread pear, rocket, cheese and walnuts on the beetroot. Drizzle with dressing.
Ciabatta is delicious with it.