Cajun Grilled Catfish Po' Boy (Louisiana Style) | Arteflame

Introduction

There is nothing quite like the satisfy crunch of a proper New Orleans sandwich to feed the soul. This Grilled Catfish Po’ Boy transports you straight to the French Quarter with its aroma of smoked paprika and sizzling butter. It is the perfect meal for a warm evening outdoors, offering a smoky, blackened crust that mimics the classic fried version while keeping things lighter, fresher, and deeply flavorful.

Why I Love This Grilling Twist

I turn to this recipe when I want bold Southern flavors without the mess and hassle of a deep fryer. The high heat of the grill creates a succulent interior and a spicy exterior that pairs beautifully with the cooling, zesty remoulade. It is a messy, joyful, crowd-pleasing meal that proves you don't need breading to achieve the perfect texture.

Kitchen Wisdom

• Pat it Dry: Ensure your catfish fillets are thoroughly patted dry with paper towels before seasoning. Moisture is the enemy of a good sear and will steam the fish rather than blacken it.
• Don't Rush the Flip: Allow the fish to cook undisturbed until it releases naturally from the grill grates. If you force it, you will lose that delicious spice crust.

Easy Swaps

If catfish isn't your favorite, this seasoning blend works wonders on shrimp or even thin chicken cutlets. For a lighter bread option, scoop out some of the soft interior of the roll to reduce the carb count while keeping the crunch.

Ingredients

For the Catfish

• 4 fresh catfish fillets (approx. 6oz each)
• 3 tablespoons unsalted butter, melted
• 2 tablespoons Cajun or Creole blackening seasoning
• 1 teaspoon smoked paprika
• 1/2 teaspoon garlic powder
• 1 lemon, cut into wedges

For the Spicy Remoulade

• 1 cup high-quality mayonnaise
• 2 tablespoons Creole mustard (or stone-ground mustard)
• 1 tablespoon fresh lemon juice
• 1 tablespoon hot sauce (Louisiana style preferred)
• 1 teaspoon minced garlic
• 1 tablespoon capers, drained and chopped
• 1 teaspoon Worcestershire sauce
• 1/2 teaspoon Cajun seasoning
• 1 green onion, finely sliced

For the Assembly

• 4 loaves of French bread (6-inch sections) or Hoagie rolls
• 2 tablespoons butter (for toasting bread)
• Shredded iceberg lettuce
• Ripe tomatoes, thinly sliced
• Dill pickle slices

Instructions

Step 1: Prepare the Zesty Remoulade

1. Begin by creating the flavor base of your sandwich. In a medium mixing bowl, combine the mayonnaise, Creole mustard, lemon juice, hot sauce, minced garlic, chopped capers, Worcestershire sauce, and Cajun seasoning.
2. Whisk the ingredients together until the mixture is smooth and creamy.
3. Fold in the sliced green onions for texture and freshness.
4. Cover the bowl and refrigerate for at least 30 minutes before serving. This allows the flavors to meld and intensify.

Step 2: Season the Catfish

1. Pat the catfish fillets dry with paper towels to ensure a good sear. Moisture is the enemy of browning.
2. Brush both sides of the fillets generously with the melted butter.
3. Sprinkle the Cajun blackening seasoning, smoked paprika, and garlic powder evenly over both sides of the fish. Press the spices gently into the flesh to help them adhere during grilling.

Step 3: Fire Up the Grill

1. Preheat your grill to medium-high heat. If you are using an Arteflame or flat-top grill, aim for a surface temperature between 400°F and 450°F.
2. Add a small amount of oil or butter to the grill surface to prevent sticking.
3. Place the catfish fillets directly onto the hot surface. Let them cook undisturbed for 3-4 minutes. You want a dark, flavorful crust to form (this is the "blackened" effect).
4. Carefully flip the fillets. Cook for another 3-4 minutes, or until the fish is opaque and flakes easily with a fork.
5. Squeeze fresh lemon juice over the fillets just before removing them from the heat.

Step 4: Toast the Bread

1. While the fish rests for a moment, butter the cut sides of your French bread loaves.
2. Place the bread, cut-side down, on the grill.
3. Toast for 1-2 minutes until the edges are golden brown and the center is warm. This step provides the crucial "crunch" that contrasts with the soft fish.

Step 5: Assemble the Po’ Boy

1. Spread a generous layer of the chilled remoulade on both the top and bottom halves of the toasted bread.
2. On the bottom bun, lay down a bed of shredded lettuce followed by tomato slices and pickles.
3. Place the warm, blackened catfish fillet on top of the vegetables.
4. Close the sandwich, press down gently, and serve immediately while hot.

Tips

The secret to a truly authentic Po’ Boy lies in the bread. You want a loaf with a flaky, crispy crust and a light, airy interior—often called "pistolet" bread in New Orleans. If you can't find traditional French bread, a high-quality Italian sub roll is a decent substitute, but avoid dense, chewy artisan breads that make the sandwich hard to bite through. When grilling the catfish, patience is key. If you try to flip the fish too early, the spice crust will tear away. Wait for the fish to release naturally from the grill grates or flat top. For an extra kick of flavor, you can brush the cut sides of the bread with garlic butter instead of plain butter before toasting. Finally, always dress the sandwich "heavily"—in Louisiana, a dry sandwich is a missed opportunity.

Variations

While catfish is the classic choice for a Friday night fish fry or grill session, the Po’ Boy format is incredibly versatile. You can easily adapt this recipe to suit different dietary preferences or whatever fresh catch is available at your local market. Here are a few popular twists on the classic:

• Grilled Shrimp Po’ Boy: Swap the catfish for large Gulf shrimp. Skewer them for easier handling on the grill and cook for 2 minutes per side.
• Oyster Po’ Boy: Traditionally fried, but you can lightly dust oysters in cornmeal and flash-sear them on a flat-top grill plate with butter.
• Chicken Po’ Boy: For non-seafood lovers, use thin-cut chicken breasts seasoned with the same Cajun rub.
• Surf & Turf: Add grilled andouille sausage slices on top of the catfish for a meatier, smoky flavor profile.
• Low Carb Bowl: Ditch the bread entirely and serve the blackened catfish over a bed of dirty rice or a large salad with the remoulade as dressing.

Best pairings

A rich, spicy sandwich like the Grilled Catfish Po’ Boy deserves sides and drinks that can stand up to its bold flavors without overpowering them. The goal is to balance the heat of the Cajun spice and the creaminess of the remoulade with crisp textures and refreshing beverages. Here are the best ways to round out your meal:

• Zapp’s Potato Chips: Specifically the "Voodoo" or "Crawtator" flavors for an authentic NOLA experience.
• Creamy Coleslaw: The cool crunch of cabbage slaw helps tame the heat of the blackening spices.
• Hushpuppies: Cornmeal fritters are a classic side; try cooking them on the flat top in a little oil.
• Cold Beer: An Abita Amber or a light pilsner pairs perfectly with spicy seafood.
• Sweet Tea: A tall glass of Southern-style iced sweet tea with lemon cuts through the richness of the remoulade.

Conclusion

Mastering the Louisiana Grilled Catfish Po’ Boy allows you to bring a piece of the French Quarter to your own backyard. It is a recipe that celebrates the harmony of textures—crispy bread, creamy sauce, crisp veggies, and tender, smoky fish. By using the grill, you not only keep the kitchen cool but also add a layer of charred flavor that a deep fryer simply cannot replicate. This sandwich is meant to be eaten with two hands, likely with a few napkins nearby, surrounded by friends and family. Fire up the grill, pour a cold drink, and enjoy the soulful, spicy flavors of the South in every bite.