In a large skillet over medium heat, soften the leek in the butter. Add the wine and let reduce until almost dry. Add the broth and bring to a boil. Add the salmon and mushrooms. Simmer for 4 minutes, stirring several times. Season with salt and pepper. Add the cream and continue cooking for 2 minutes.
Meanwhile, in a large pot of salted boiling water, cook the pappardelle until al dente. Drain.
Add the pasta and lemon juice to the sauce and gently stir to combine. Adjust the seasoning and sprinkle with the dill.
Recipes with the "Healthy Pick" stamp have been evaluated by a registered dietitian member of the Ordre professionnel des diététistes du Québec.