1) To prepare the pasta started to chop the nuts and mix them with the flour and a pinch of salt. Add the cold butter into small pieces and knead to obtain a crumbed mixture. Incorporate i yolks and 2 tablespoons of cold water and work until the dough is smooth and homogeneous. Wrap it with cling film and let it rest in the fridge for at least 1 hour.
2) Meanwhile, prepare the stuffed browning the onion sliced with 2 tablespoons of oil and a pinch of salt. Then lower the heat and let them simmer 10-15 minutes. In another pan, sauté in butter there pear peeled and cut into thin wedges.
3) Roll out the dough with a rolling pin. Grease a 20 cm diameter cake pan and line it with browse. Fill with the onions, the potato sliced and the pear prepared, add half of the gorgonzola crumbled and of the nuts, coarsely chopped. Mix the cream, the milk and theegg and pour it all over the filling. Complete with nuts and the gorgonzola remaining and bake at 180 degrees for 1 hour.
