Wash and chop the radicchio; transfer it to a pot with a drizzle of extra virgin olive oil. Season with salt and pepper and cook for about 10 minutes, until tender. Meanwhile, prepare the walnut cream: blend the walnuts, 30g of Parmesan cheese, and the cooking cream. You'll obtain a thick cream. Set aside. Use the remaining Parmesan cheese to shape the wafer, which will add a crunchy touch to the dish. Simply spread the cheese in the pan, covering it with a sheet of parchment paper. Place the pan on the stove and cook, covered, until completely melted and golden. Let it cool. It's time for the Nonna Rina potato gnocchi: plunge them into plenty of boiling salted water, draining them as soon as they float to the surface. Combine them with the stewed radicchio, add a ladle of the gnocchi cooking water, and the walnut cream. Stir gently to combine all the flavors. Finish with the crumbled crispy Parmesan wafer and... ready! Enjoy!