Bring a large pot of salted water to boil. Toss in the penne pasta and cook according to the package directions.
In a medium pan, add a drizzle of olive oil, the chopped salmon, the minced garlic and the tomato paste.
Cook on medium-high heat until the salmon is fully cooked. Add the heavy cream to the pan and cook for a minute longer.
Transfer most or all of the salmon into a blender, and blend into a smooth sauce.
Pour the sauce back into the pan and season with salt and chili pepper flakes to taste.
Drain the penne pasta al dente and add them to the sauce. Mix well until fully coated and serve immediately with a generous amount of minced parsley on top.
Notes
When you drain the pasta, set aside a cup of pasta cooking water. If the sauce is too dense when you mix it with the pasta, add a few tablespoons of pasta water to make it smooth and velvety.