n n n Cook pasta according to the package instructions. Meanwhile, saute the onion in butter over medium heat for 4-5 minutes.n n n n Add the salmon and keep cooking for another 5-7 minutes, breaking it into flakes as it cooks.n n n n Add the heavy cream, salt, and pepper. Stir and turn off the heat.n n n n Add the cooked pasta, Parmigiano Reggiano, and chopped parsley, mixing everything together thoroughly.n n n n Sprinkle with more cheese and parsley before serving.n nn