Combine all of the dough ingredients in a large bowl, then cover the bowl with a dishtowel and set aside to rest for about 30 minutes.
Combine the walnuts, Gorgonzola, truffle oil, garlic, salt, and sugar in a small bowl.
Roll the dough out on a lightly floured surface and cut it into 6 equal squares.
Put equal slices of pears and provolone cheese on 1 half of each piece of dough. Top with 2 tablespoons of the walnut mixture. Fold the dough square in half to make a triangle and close the edges by pressing down with your fingers or a fork. Brush each calzone with olive oil and sprinkle with garlic salt.
Put the calzones on a lightly greased cookie sheet. Bake until lightly browned, about 17 minutes. Remove the calzones from the oven and put them on serving plates.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.