Main Sauce:

• ½ cup unsalted butter
• 1 ½ cups heavy cream
• 2 tablespoons Cajun seasoning (homemade or store-bought)
• ½ teaspoon kosher salt (omit if your seasoning blend contains salt)
• 1 ¾ cups freshly grated Parmesan cheese
• 1 lemon zest only

Homemade Cajun Seasoning:

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