Authentic Cast-Iron Blackened Redfish with Maître d'Hôtel Butter

🌍 Cuisine: Cajun and Creole
🏷️ Category: Main Course
⏱️ Prep: 20 minutes
🍳 Cook: 15 minutes
👥 Serves: 4 servings

📝 About This Recipe

Transport your senses to the vibrant streets of New Orleans with this quintessential Cajun masterpiece, a technique famously popularized by Chef Paul Prudhomme. Fresh redfish fillets are dredged in a potent blend of aromatic spices and seared in a white-hot cast-iron skillet to create a savory, dark crust that seals in incredible moisture. The result is a smoky, spicy, and buttery flake that represents the very heart of Louisiana's bold culinary heritage.

🥗 Ingredients

The Fish

  • 4 pieces Redfish Fillets (6-8 oz each, skin removed, about 1/2 inch thick)
  • 1 cup Unsalted Butter (melted and kept warm in a shallow bowl)

Chef's Blackening Spice Blend

  • 3 tablespoons Smoked Paprika (high quality for deep color)
  • 1 tablespoon Onion Powder
  • 1 tablespoon Garlic Powder
  • 1 teaspoon Cayenne Pepper (adjust for heat preference)
  • 1 teaspoon Dried Thyme (rubbed between palms to release oils)
  • 1 teaspoon Dried Oregano
  • 1.5 teaspoons Kosher Salt
  • 1 teaspoon Black Pepper (freshly cracked)
  • 1 teaspoon White Pepper (essential for authentic 'creep' heat)

For Garnish and Serving

  • 2 Lemons (cut into wedges)
  • 1/4 cup Fresh Parsley (finely chopped)
  • 2 pieces Green Onions (thinly sliced on a bias)

👨‍🍳 Instructions

  1. 1

    Place a large, heavy-duty cast-iron skillet over high heat. This is the most critical step; the pan must be extremely hot, almost white-hot, which usually takes about 10 minutes.

  2. 2

    While the pan is heating, mix all the ingredients for the Blackening Spice Blend in a small bowl until thoroughly combined.

  3. 3

    Pat the redfish fillets completely dry with paper towels. Any moisture on the surface will steam the fish rather than sear it.

  4. 4

    Melt the cup of butter and pour it into a shallow dish or pie plate. Place the spice blend on a separate flat plate.

  5. 5

    Dip one fillet into the melted butter, ensuring both sides are well-coated.

  6. 6

    Immediately lay the buttered fillet into the spice blend. Press firmly so the spices adhere, then flip to coat the other side generously.

  7. 7

    Repeat this process for all fillets, placing them on a clean tray once coated. Do not let them sit too long or the spices will become soggy.

  8. 8

    Once the skillet is lightly smoking, carefully place two fillets in the pan. Be prepared for a significant amount of smoke—turn on your exhaust fan or open a window!

  9. 9

    Pour a teaspoon of the remaining melted butter directly over each fillet in the pan. This creates the 'flare' that helps form the crust.

  10. 10

    Cook the fish undisturbed for 2 to 3 minutes. You are looking for a dark brown, nearly black crust to form.

  11. 11

    Carefully flip the fillets using a metal spatula. The fish is delicate, so be gentle to keep the fillet whole.

  12. 12

    Cook for another 2 minutes on the second side, or until the fish flakes easily with a fork and is opaque throughout.

  13. 13

    Remove the fillets to a warm platter and repeat with the remaining fish. Wipe out the pan between batches if any spices have burned excessively.

  14. 14

    Serve immediately while the crust is crisp and the interior is succulent.

💡 Chef's Tips

Always use a cast-iron skillet; stainless steel or non-stick cannot handle the high heat required for true blackening. Ensure your kitchen is well-ventilated or cook outdoors on a high-heat burner, as the process generates a lot of spicy smoke. If redfish isn't available, snapper, grouper, or even catfish are excellent substitutes that hold up well to the heat. Do not use oil in the pan; the butter on the fish provides the fat needed for the reaction. For the best results, use fillets of uniform thickness (about 1/2 inch) so they cook evenly without drying out.

🍽️ Serving Suggestions

Serve alongside a heap of buttery Dirty Rice or classic Jambalaya for a full Cajun experience. A side of Maque Choux (Cajun corn salad) provides a sweet contrast to the spicy fish. Pair with a crisp, cold Abita Amber beer or a dry Chenin Blanc to cut through the richness. Offer a ramekin of remoulade sauce on the side for those who enjoy an extra creamy, tangy kick. Always serve with extra lemon wedges; the acidity brightens the deep, smoky flavors of the spices.