Cook the Pasta: Bring a large pot of salted water to a boil, add penne pasta, and cook until al dente, about 10–12 minutes. Reserve 1 cup of pasta water before draining.

Sauté the Aromatics: In a skillet, heat olive oil, add diced onion and minced garlic, and sauté for about 5 minutes until fragrant.

Brown the Beef: Increase heat, add ground beef, and cook for about 7 minutes until browned. Season with salt, pepper, and Italian seasoning.

Create the Creamy Sauce: Lower heat, add heavy cream, then gradually mix in reserved pasta water. Stir in Parmesan cheese until melted.

Combine Everything: Add drained pasta to the skillet and toss with the creamy beef mixture, simmer for 1–2 minutes.

Serve Up: Plate the pasta and garnish with extra Parmesan cheese or parsley. Serve immediately.