1. Prepare the Citrus Slaw: In a large bowl, combine the pre-shredded coleslaw mix, thinly sliced red cabbage, chopped orange segments, and chopped grapefruit segments. Add the chopped fresh cilantro.

2. Whisk the Slaw Dressing: In a small bowl, whisk together the olive oil, fresh lime juice, honey (or maple syrup), Dijon mustard, salt, and black pepper until well combined. Pour the dressing over the slaw mixture and toss gently to ensure all ingredients are evenly coated. Set aside to allow the flavors to meld while you prepare the shrimp.

3. Pat the Shrimp Dry: Lay the peeled and deveined shrimp on a paper towel-lined plate and pat them thoroughly dry. This step is crucial for achieving a good sear and preventing the shrimp from steaming in the pan. Season the shrimp lightly with salt and black pepper.

4. Melt the Butter and Saute Garlic: In a large skillet or frying pan, melt the unsalted butter over medium heat. Once the butter is melted and slightly foamy, add the minced garlic. Saute for about 30 seconds until fragrant, being careful not to burn it.

5. Cook the Shrimp: Add the seasoned shrimp to the skillet in a single layer. Sprinkle the smoked paprika and cayenne pepper (if using) over the shrimp. Cook for 2-3 minutes per side, or until the shrimp turn pink and opaque and are cooked through. Avoid overcooking, as shrimp can become rubbery quickly.

6. Finish and Garnish: Remove the skillet from the heat. Stir in the fresh chopped parsley. Taste the shrimp and adjust seasoning if necessary.

7. Serve Immediately: Divide the garlic butter shrimp among plates and serve alongside generous portions of the refreshing citrus slaw. Enjoy your festive Mardi Gras meal!