01 - Melt butter in a medium saucepan over medium heat.
02 - Add minced garlic to the melted butter and sauté for about 1 minute until fragrant, being careful not to burn it.
03 - Pour in heavy cream and stir in Cajun seasoning and black pepper.
04 - Bring the mixture to a gentle simmer, then reduce heat to low and cook for 5-7 minutes, or until the sauce slightly thickens, stirring occasionally.
05 - Remove the saucepan from the heat and stir in grated Parmesan cheese until completely melted and the sauce is smooth and creamy.
06 - Season with salt to taste.
07 - Serve immediately over your favorite pasta, protein, or vegetables.