Melt the butter in a large frying pan and cook over a medium heat for 3–4 minutes, swirling until the butter turns golden and smells nutty. Meanwhile, cook the tortelloni according to packet ...
Heat the butter with the olive oil in a small frying pan and gently fry the onion and leeks for 4–5 minutes, until softened but not browned. Remove the fish from the pan, and set aside to cool ...
featuring tender triangular parcels of fresh pasta with a potato, fontina and mascarpone filling, finished with nutty browned butter and grated Parmesan.