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Cajun Alfredo Sauce

Easy Home Cooking
This decadent Cajun Alfredo sauce blends butter, cream, fresh Parmesan, and a homemade Cajun spice mix. Finished with bright lemon zest, it’s bold yet balanced and comes together in minutes—perfect for an easy dinner upgrade.
Prep Time 5 minutes
Cook Time 10 minutes
Total Time 15 minutes
Servings 4
Calories 330 kcal

Ingredients
  

  • ½ cup 1 stick unsalted butter
  • 1 ½ cups heavy cream
  • 2 tablespoons Cajun seasoning store-bought or homemade – see below
  • ½ teaspoon kosher salt omit if Cajun blend contains salt
  • 1 ¾ cups freshly grated Parmesan cheese
  • Zest of 1 lemon

Homemade Cajun Seasoning (makes extra, store in a jar):

  • 3 tablespoons smoked paprika
  • 1 tablespoon onion powder
  • 1 tablespoon garlic powder
  • 2 teaspoons kosher salt
  • 1 teaspoon white pepper
  • 1 teaspoon ground mustard
  • 1 teaspoon dried oregano
  • 1 teaspoon dried thyme
  • 1 teaspoon cayenne pepper
  • ½ teaspoon dried basil

Instructions
 

  • In a large skillet over low heat, melt the butter until it begins to foam slightly.
  • Stir in the heavy cream and Cajun seasoning.
  • Add salt only if your seasoning blend is salt-free.
  • Bring to a gentle simmer and cook for 5–6 minutes, stirring occasionally.
  • Remove from heat and stir in lemon zest.
  • See full steps with tips & photos → https://wimpysdiner.net/cajun-alfredo-sauce/

Notes

Use freshly grated Parmesan—not pre-shredded—for the smoothest texture.
Adjust Cajun seasoning to your heat preference.
Sauce thickens as it cools—add a splash of warm cream or pasta water to loosen if needed.