Cheese Biscuits

Preparation:

Preparation: Boil and peel the potatoes. Pass them through a potato masher and then add the flour and half of the softened butter. Work the compound well and with a rolling pin roll it out to half a centimeter high. In a bowl, mix the gorgonzola with the remaining butter and the chopped walnut kernels. Cut out many triangles from the potato paste, cover them with the slices cut in the same shape, spread them with gorgonzola, cover them with another triangle, sealing the edges well. Brush the surface with the egg yolk. Put in the oven at 180 degrees for a quarter of an hour. Brush again with the egg and decorate with a walnut kernel. Put in the oven for 2 minutes. Serve