Gather pasta, tomato sauce, heavy cream, garlic, onion, butter, salt, pepper, and Parmesan cheese.
Cook pasta according to package instructions until al dente. Drain and set aside.
In a skillet, sauté minced garlic and diced onion in butter until soft and fragrant.
Pour in tomato sauce and let it simmer for a few minutes to develop flavors.
Stir in heavy cream until the sauce turns a beautiful pink color. Season with salt and pepper.
Add the cooked pasta to the sauce and toss until well coated.
Serve hot and enjoy this creamy and flavorful pink sauce pasta!