01 - Bring a large pot of salted water to a boil. Add fettuccine and cook according to package directions until al dente. Reserve 1/2 cup pasta water, then drain.
02 - Melt butter in a large skillet over medium heat. Add minced garlic and sauté for 1 to 2 minutes until fragrant, avoiding browning.
03 - Pour in heavy cream and stir to combine. Bring to a gentle simmer and cook for 3 to 4 minutes until the sauce slightly thickens.
04 - Add grated Parmesan, sea salt, and black pepper. Stir continuously until cheese melts and sauce becomes smooth.
05 - Add drained fettuccine to skillet and toss to coat evenly. Gradually add reserved pasta water as needed to achieve desired consistency.
06 - Remove from heat, sprinkle with chopped parsley, and gently toss to distribute.
07 - Plate immediately, topping with additional Parmesan and parsley if preferred.