01 - Bring a large pot of salted water to a rolling boil. Add the fettuccine and cook according to package directions until al dente. Reserve 1/2 cup of the pasta cooking water, then thoroughly drain the pasta.
02 - While the pasta cooks, melt the unsalted butter in a large skillet over medium heat. Introduce the minced garlic and sauté for approximately 1 minute, until aromatic but not browned.
03 - Pour the heavy cream into the skillet and bring it to a gentle simmer. Stir occasionally and allow it to cook for 2 to 3 minutes to slightly thicken.
04 - Reduce the heat to low. Gradually add the freshly grated Parmesan cheese in small increments, stirring continuously until the cheese is fully melted and the sauce achieves a smooth, velvety consistency. Season with freshly ground black pepper and nutmeg, if desired.
05 - Add the drained fettuccine directly to the skillet with the Alfredo sauce. Toss thoroughly to ensure the pasta is evenly coated. If a looser sauce consistency is preferred, add a splash of the reserved pasta water as needed.
06 - Serve the Creamy Alfredo immediately. Garnish each serving with chopped fresh parsley and additional grated Parmesan cheese.