Set a large high sided skillet over medium-high heat and add olive oil. Cajun Shrimp Pasta takes Fettucini Alfredo to the next level with juicy, pan-seared shrimp, sautéed bell peppers and onion, a creamy, Cajun-spiced Alfredo sauce, and a fresh garnish of chopped tomatoes and sliced green onions!. Reduce heat to medium-low and slowly whisk in cream; cook for 2 minutes. The pasta was made the same way this recipe is made — boiling the fettuccine, cooking the Cajun shrimp, mixing everything with the Alfredo sauce. Season the shrimp with Cajun seasoning and add to the skillet when the oil is hot. Drain and set aside until ready to use. The only difference was that all I needed to do with the sauce was heat it up on the stove instead of making it from scratch. Season with white pepper and red pepper flakes. Whisk in remaining flour-Cajun seasoning slowly until well incorporated. Once the water is boiling add in the pasta and cook according to box directions. Cook until sauce has thickened, 2 minutes more. An Italian pasta classic is getting a dinnertime upgrade thanks to a little Cajun twist! Add Parmesan cheese slowly, whisking constantly.