Boil the Pasta: Start by bringing a large pot of salted water to a rolling boil. Add the bowtie pasta and cook until al dente, typically about 8–10 minutes. Drain and set aside.

Brown the Ground Beef: In a skillet, heat oil over medium heat. Add ground beef, cook for about 5–7 minutes until browned. Season with Cajun seasoning, salt, and pepper. Remove beef and set aside.

Sauté the Aromatics: In the same skillet, reduce heat and add butter. Once melted, add onion and garlic; sauté for 2–3 minutes until fragrant.

Melt the Cream Cheese: Add cream cheese, stirring until melted. Gradually pour in heavy cream, stirring until slightly thickened, about 3–4 minutes.

Add the Parmesan Cheese: Sprinkle in grated Parmesan, stirring until it melts into the sauce. Adjust seasoning with more Cajun spice, salt, or pepper.

Combine the Beef and Pasta: Return the beef to the skillet, stirring to coat with sauce. Fold in pasta and heat through for about 2–3 minutes.

Serve and Garnish: Transfer to serving plates. Garnish with parsley and additional Parmesan if desired. Serve hot.