In a large pot, bring salted water to a vigorous boil. Add the penne pasta, cooking according to package directions until it reaches an al dente texture. Remember to reserve 1 cup of the pasta water before draining the pasta. Set the drained pasta aside.
In the same pot that you used for the pasta, heat the extra virgin olive oil over medium heat. Add the minced garlic and finely chopped onion. Sauté for approximately 3-4 minutes, stirring occasionally, until the onions are translucent and fragrant.
Incorporate the red pepper flakes into the pot, stirring for about a minute to release their heat and flavor.
Pour in the crushed tomatoes, stirring gently. Increase the heat slightly to bring the mixture to a gentle simmer. Allow it to cook for about 7-10 minutes, stirring occasionally, until the sauce thickens slightly and the flavors come together beautifully.
Reduce the heat to low and add in the heavy cream. Stir continuously until fully combined, creating a lovely pink sauce. If the sauce appears too thick, gradually add some of the reserved pasta water until you achieve your desired consistency.
Fold in the grated Parmesan cheese, mixing until it melts seamlessly into the sauce, enhancing its creaminess. Adjust the seasoning with salt and freshly ground black pepper to taste.
Add the reserved penne pasta into the sauce, gently tossing to ensure each piece is beautifully coated in the creamy, spicy tomato sauce.
Dish the pasta into servings, garnishing each plate with fresh basil leaves and an extra sprinkle of Parmesan cheese for an inviting finish.
Notes
For an elegant touch, serve the pasta in shallow bowls and drizzle with olive oil.