01 - Bring a large pot of salted water to a rolling boil. Introduce the pasta and cook according to package directions until it reaches an al dente texture. Reserve ½ cup of the pasta cooking water before draining the pasta thoroughly.
02 - In a spacious skillet, melt the butter with the olive oil over medium heat. Add the minced garlic and gently sauté for 1 to 2 minutes, just until aromatic but not browned.
03 - Pour in the heavy cream and bring the mixture to a gentle simmer. Continue to cook for 3 to 4 minutes, stirring periodically.
04 - Stir in the Parmesan cheese, salt, black pepper, and red pepper flakes (if desired). Mix continuously until the cheese has fully melted and the sauce achieves a smooth consistency.
05 - Add the drained pasta directly to the sauce, tossing gently to ensure even coating. If the sauce appears too thick, gradually incorporate small amounts of the reserved pasta water until your desired consistency is achieved.
06 - Remove the skillet from the heat and fold in the freshly chopped parsley.
07 - Plate immediately, garnishing each serving with additional grated Parmesan and fresh parsley.