Bring a large pot of water to a rolling boil. Add the salt, followed by the pasta. Give everything a stir and reduce the heat to medium. Stir the pot occasionally to ensure the pasta doesn’t stick together. You want to cook the pasta until it is al dente (i.e. isn’t fully soft), about 8-9 minutes.
While the pasta is cooking, preheat a large frying pan over medium-high heat. Add the olive oil, followed by the garlic and onion and fry until the onion has become translucent, about 3-4 minutes. Add the chili flakes and ground black pepper and fry for one minute.
Next, pour the passata sauce and oregano into the pan and give everything a stir. Turn the heat down to medium-low and let the sauce simmer for 5 minutes. Add the Parmesan cheese and mix to combine. Finally, add the heavy cream and mix to combine again.
Once the pasta is al dente, strain the pasta and add it to the rose sauce. Mix the pasta and the sauce together so that it is all incorporated. Let the pasta and sauce simmer for another 3-5 minutes, until the pasta has absorbed some sauce and is cooked.
Garnish with additional Parmesan cheese and basil leaves. Serve immediately and enjoy!