If using wooden skewers, soak them in water for about 30 minutes to prevent burning.
In a bowl, whisk together the Danish Creamery European-Style melted butter, 2 teaspoons of Cajun seasoning, parsley, garlic, and lemon juice. Reserve half of the Cajun garlic butter sauce for basting. Place shrimp in a large bowl and pour half of the Cajun garlic butter sauce over the shrimp, followed by 1 teaspoon of Cajun seasoning. Toss to combine all of the ingredients.
Thread the shrimp onto the skewers and place them on a sheet pan.
Heat the grill to med-high heat. Place each shrimp skewer onto the grill, and cook for about 3-4 minutes on each side, or until the shrimp is no longer translucent and a bit charred.
Brush the remaining Cajun garlic butter sauce over the shrimp skewers and serve with lemon slices, if desired. (optional). *If the remaining sauce solidified, just pop it into the microwave for about 15 minutes to melt it.