This easy Cajun Alfredo sauce recipe is made with butter, garlic, cream, a creole seasoning blend, and freshly grated parmesan cheese. A typical Cajun spice mix includes paprika, cayenne pepper, garlic powder, onion powder, black pepper, white pepper, thyme, oregano, and salt. This recipe uses Tony Chachere's Original Creole Seasoning. To serve, pour the creamy Alfredo sauce over al dente fettuccine to make fettuccine Alfredo.