Wash the pears, dry them, peel and stone them and cut them into 8 slices.
Melt butter in a frying pan, add brown sugar and rosemary. Let the sugar dissolve, stirring. Fry the pear slices until a caramel crust forms and carefully place them on a plate.
Wash and dry the arugula.
Cut the cheese into slices, walnuts can be calcined if desired.
To prepare the sauce: mix 1 tsp lemon juice, 1 tsp honey, 1 tbsp vinegar and 4 tbsp. put arugula on a dish, then slices of caramelized pears, cheese and nuts.
Pour the sauce over the salad.