Blackened Catfish Po'boy Sandwich with Remoulade Sauce

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · Published 2026-05-12 · Updated 2026-05-12

A spicy blackened catfish fillet tucked inside a toasted French roll, topped with crisp lettuce, tomato, and a zesty remoulade sauce. This caribbean-inspired sandwiches & wraps ready in about 25 minutes blends catfish fillets, olive oil, paprika into a versatile sauce that lifts everything from grain bowls and roasted vegetables to grilled proteins — a small-batch staple worth keeping in the fridge. Each serving lands at about 480 calories and feeds 4, so a small batch covers several meals across the week without taking over the fridge. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Ingredients

• 1 lb catfish fillets
• 2 tbsp olive oil
• 2 tsp paprika
• 1 tsp cayenne pepper
• 1 tsp garlic powder
• 1 tsp onion powder
• 1/2 tsp dried thyme
• 1 tsp salt
• 1/2 tsp black pepper
• 4 French sandwich rolls
• 1 cup shredded iceberg lettuce
• 1 medium sliced tomato
• 1/2 cup mayonnaise
• 1 tbsp Dijon mustard
• 1 tbsp prepared horseradish
• 1 tsp Worcestershire sauce
• 1 tsp hot sauce
• 1 tbsp lemon juice
• 1 clove minced garlic
• 1 tbsp chopped fresh parsley

Instructions

1. Step 1: In a small bowl, combine 2 tsp paprika, 1 tsp cayenne pepper, 1 tsp garlic powder, 1 tsp onion powder, 1/2 tsp dried thyme, 1 tsp salt, and 1/2 tsp black pepper to create the blackening spice mix. Rub 1 lb catfish fillets evenly with 2 tbsp olive oil, then coat both sides with the spice mixture.
2. Step 2: Heat a large cast-iron skillet over medium-high heat until very hot, about 3 minutes. Add the catfish fillets and cook for 3-4 minutes per side until blackened and cooked through with a crispy crust.
3. Step 3: Meanwhile, in a small bowl, whisk together 1/2 cup mayonnaise, 1 tbsp Dijon mustard, 1 tbsp prepared horseradish, 1 tsp Worcestershire sauce, 1 tsp hot sauce, 1 tbsp lemon juice, 1 minced garlic clove, and 1 tbsp chopped fresh parsley until smooth to make the remoulade sauce.
4. Step 4: Slice 4 French sandwich rolls lengthwise and toast them lightly. Spread about 2 tbsp remoulade sauce on each roll bottom half. Layer 1 catfish fillet, 1/4 cup shredded iceberg lettuce, and 2-3 slices of tomato on each. Top with the roll tops and serve immediately.