01 - Bring a large pot of salted water to a boil. Cook pasta according to package instructions until al dente. Reserve ½ cup of pasta water, then drain the pasta.
02 - In a large skillet over medium heat, melt butter with olive oil. Add minced garlic and sauté for 1–2 minutes, stirring constantly, until fragrant but not browned.
03 - Pour heavy cream into the skillet and bring to a gentle simmer. Cook for 2–3 minutes, stirring occasionally.
04 - Add grated Parmesan cheese, salt, pepper, and nutmeg if using. Stir until cheese melts and sauce thickens slightly.
05 - Add cooked pasta to skillet, tossing to coat evenly in sauce. Add reserved pasta water gradually until desired consistency is reached.
06 - Remove from heat and stir in chopped parsley.
07 - Serve immediately, garnished with extra Parmesan cheese and additional parsley if desired.