1. Bring a large pot of salted water to a boil. Cook spaghetti according to package directions until al dente. Drain and set aside.

2. In a large oven-safe skillet, cook ground beef over medium-high heat until browned. Drain excess grease. Season with 1 teaspoon of Cajun seasoning. Transfer beef to a bowl.

3. In the same skillet, melt butter over medium heat. Add garlic and sauté for 30 seconds until fragrant.

4. Pour in heavy cream. Stir in remaining 1 teaspoon Cajun seasoning and bring to a gentle simmer.

5. Reduce heat to low. Add Parmesan, cheddar, and mozzarella cheese. Stir until melted and smooth. Season with salt and pepper.

6. Add the cooked spaghetti to the cheese sauce and toss to coat evenly. Flatten the pasta in the skillet.

7. Spoon the cooked beef over the top. Sprinkle with extra cheese if desired.

8. Transfer skillet to preheated oven at 375°F. Bake for 10–12 minutes until bubbly and golden on top.

9. Remove from oven. Garnish with chopped parsley and serve hot.