Cook the Pasta: Bring a large pot of salted water to a boil. Add the pasta and cook according to package instructions until al dente. Reserve ½ cup of pasta water, then drain the pasta and set aside.

Prepare the Ground Beef:

• In a large skillet, heat the olive oil over medium heat.
• Add the finely diced onion and sauté for 2–3 minutes until translucent.
• Add the minced garlic and cook for an additional 1 minute until fragrant.
• Add the ground beef, breaking it apart with a spoon, and cook until browned and cooked through, about 5–7 minutes. Drain any excess fat if necessary.

Prepare the Alfredo Sauce:

• Reduce the heat to medium-low.
• Pour in the heavy cream, stirring to combine with the beef mixture.
• Add the grated Parmesan cheese and Italian seasoning. Stir continuously until the cheese has melted and the sauce is smooth and creamy.
• If the sauce is too thick, gradually add some of the reserved pasta water until the desired consistency is reached.
• Season with salt and freshly ground black pepper to taste.

Combine Pasta and Sauce:

• Add the cooked pasta to the skillet with the Alfredo sauce.
• Toss gently to ensure the pasta is evenly coated with the sauce.

Serve:

• Divide the pasta into serving bowls or plates.
• Garnish with freshly chopped parsley and additional grated Parmesan cheese, if desired.
• Serve immediately.