Start by boiling a large, salted pot of water over high heat. Once it reaches a rolling boil, add the pasta. Cook according to the package directions until al dente, usually about 8 to 10 minutes.
While the pasta is cooking, heat a large skillet over medium heat. Add the butter and olive oil, allowing the butter to melt and foam.
Next, add the finely chopped onion to the skillet. Sauté for about 5 minutes, or until the onion becomes translucent and slightly golden. This step enhances the flavor of your dish.
Stir in the Dijon mustard, sun-dried tomatoes, and minced garlic. Cook for about 1 minute, stirring constantly to prevent burning. The aroma at this point is heavenly!
Pour in the heavy cream and add the Cajun seasoning. Stir well and let the mixture simmer for about 3 to 5 minutes, until the sauce thickens and becomes creamy.
Now it’s time to add the shrimp into the skillet. Cook for about 5 minutes, stirring occasionally, until the shrimp are pink and opaque. Make sure not to overcook!
Season with salt and pepper to taste. Stir in the fresh basil leaves, allowing them to wilt slightly in the warm sauce.
Once the pasta is cooked, drain it and add it directly to the skillet. Toss gently to combine, ensuring every strand is coated in that luscious sauce.
Serve the Creamy Cajun Shrimp Pasta hot, garnished with freshly grated parmesan cheese on top. Enjoy this rich, flavorful dish with your favorite companions!