Cook pasta: Bring a large pot of salted water to a boil. Cook pasta according to package instructions until al dente. Drain and set aside.

Cook the beef: In a large skillet, heat olive oil over medium-high heat. Add ground beef and cook until browned and no longer pink. Drain excess grease if needed.

Add garlic and butter: Reduce heat to medium. Add butter and garlic to the beef. Sauté for 30 seconds until fragrant.

Make Alfredo sauce: Pour in the heavy cream and stir gently. Simmer for 3–4 minutes until slightly thickened.

Season and add cheese: Stir in Parmesan, salt, pepper, garlic powder, and nutmeg. Mix until smooth and creamy.

Combine pasta: Add cooked pasta to the skillet. Toss to coat evenly with the sauce.

Simmer: Let the mixture simmer for 2–3 minutes until heated through and silky.

Serve: Garnish with parsley and extra Parmesan, if desired. Serve immediately.