In a large pan, sauté the finely chopped onion and minced garlic at medium heat until golden and fragrant.
Add the tomato sauce to the pan and stir gently to combine with the onions and garlic. Cook for about 10 minutes.
Pour in the cream and season with salt, black pepper, and chopped parsley. Let the sauce simmer.
Cook the pasta according to the package instructions until al dente.
Drain the cooked pasta and add it to the pan with the pink sauce. Toss gently to coat the pasta evenly with some parmesan and chopped parsley. Add the same pasta water if needed,
Serve the pasta topped with grated Parmesan cheese.