Place the butter in a skillet over medium heat. Once melted, add the minced garlic and sauté for about 1 minute, until fragrant.
Pour in the white wine and bring it to a gentle simmer. Let it cook for a few minutes until it reduces slightly. Add the Cajun seasoning, salt, and pepper, stirring well to combine.
Pour in the heavy cream and bring the sauce to a gentle simmer. Let it cook for a few minutes until it begins to slightly thicken.
Stir in the grated Parmesan cheese and allow it to melt completely. Add the chopped parsley and stir until fully incorporated. The sauce should be smooth, creamy, and rich.
Your Creamy Cajun Sauce is ready to be served