Begin by bringing a large pot of salted water to a rolling boil over high heat. Add the penne pasta and stir gently. Cook the pasta for about 10-12 minutes, or until al dente, ensuring it remains firm but not hard when bitten. Once cooked, drain the pasta but do not rinse, as the residual starch will help the sauce cling beautifully.

In a large skillet, melt 3 tablespoons of butter over medium heat. Once melted and bubbly, add the diced onion, cooking for about 4-5 minutes until it becomes soft and translucent.

Add the salmon fillet directly to the skillet with the sautéed onions. Cook for 5-7 minutes, turning occasionally, until the salmon flakes easily with a fork and is opaque throughout.

Pour in 1 cup of heavy cream to the skillet, stirring gently to combine. Season with sea salt and black pepper to taste. Allow the mixture to simmer for about 2-3 minutes.

Once the sauce has thickened, add the drained pasta and ½ cup of freshly grated Parmesan cheese to the skillet. Toss everything together gently for about a minute.

Remove the skillet from heat and transfer your Easy Creamy Salmon Pasta to serving plates. Garnish each plate with extra Parmesan and a sprinkle of freshly chopped parsley.