FlamingFoodies recipe
Blackened Catfish with Cajun Remoulade
Pan-seared catfish fillets coated in a smoky cayenne-forward spice blend, served with a tangy remoulade that balances the heat with creamy richness.
Catfish fillets get coated in a paprika and cayenne spice blend, then seared in a blazing-hot cast iron skillet until the spices form a dark, aromatic crust. The tangy remoulade provides the perfect cooling contrast.
Ingredients
Blackening Spice
- 2 tablespoonspaprika
- 1 teaspooncayenne pepper
- 1 teaspoondried oregano
- 1 teaspoondried thyme
- 1 teaspoononion powder
- 1 teaspoongarlic powder
- 1 teaspoonkosher salt
- 1/2 teaspoonblack pepper
- 1/4 teaspoonwhite pepper
Fish
- 4 filletscatfish, 6-8 oz each, patted dry
- 4 tablespoonsunsalted butter, melted
Cajun Remoulade
- 1/2 cupmayonnaise
- 2 tablespoonscreole mustard
- 1 tablespooncapers, chopped
- 2 teaspoonsfresh lemon juice
- 1 teaspoonhot sauce, Louisiana-style
- 1 stalkcelery, finely diced
- 2 tablespoonsgreen onions, chopped
- 1 clovegarlic, minced
Method
1. Make the remoulade and prep the spice blend Whisk together mayonnaise, creole mustard, capers, lemon juice, hot sauce, celery, green onions, and garlic in a bowl. Set this aside while you cook the fish. In a shallow dish, combine all your blackening spices and mix them well.
Watch for: The remoulade should taste tangy with a gentle kick
Tip: The remoulade actually gets better as it sits—make it up to a day ahead if you can.
2. Coat the catfish with spices Brush each catfish fillet generously with melted butter on both sides. Press the fillets into your spice mixture, coating them completely and patting gently so everything sticks. They should look almost black with all that beautiful seasoning.
Watch for: Each fillet should be evenly coated with no bare spots peeking through
Tip: The butter isn't just for flavor—it helps the spices cling and keeps them from burning.
3. Heat the skillet to smoking Set your cast iron skillet over medium-high heat and give it about 4 minutes to get blazing hot. You want to see a bit of smoke before you add the fish. Skip the oil—the butter on the fish gives you all the fat you need.
Watch for: The pan should be hot enough that a drop of water instantly dances and disappears
Tip: Fair warning: open your windows and turn on that exhaust fan. Blackening makes some serious aromatic smoke.
4. Blacken the catfish Carefully lay the seasoned fillets in the hot skillet and resist the urge to peek or move them for a full 3 minutes. Flip once and cook another 2-3 minutes until the fish flakes easily. Those spices will darken beautifully and smell absolutely incredible.
Watch for: The fish is ready when it flakes easily and hits 145°F on a thermometer
Tip: Trust the process and let that crust develop—moving the fish too soon will mess up that perfect blackening.
Equipment
- cast iron skillet
- shallow dish
- mixing bowl
- whisk
Make ahead
- The remoulade actually improves over time—make it up to 2 days ahead and keep it chilled. You can mix that blackening spice blend up to a week ahead and store it in an airtight container.
Storage
- Leftover cooked fish keeps in the fridge for up to 2 days. That remoulade will stay fresh for up to 5 days refrigerated.
Reheat
- Gently warm the fish in a 300°F oven for 8-10 minutes, or just flake it cold into salads or po' boy sandwiches.
Top tips
- Cast iron is your best friend here—it holds heat like nobody's business and gives you that superior browning you're after
- Make sure to pat that fish bone dry before seasoning, or those spices will just slide right off
- Don't toss leftover blackening spice—it's fantastic on chicken, shrimp, or even roasted vegetables
Substitutions
- Try smoked paprika instead of regular for an even deeper flavor
- Regular mustard works fine if you can't find creole mustard
- Any firm white fish like red snapper or grouper will work beautifully here
Serve with
- Pile it over dirty rice with that remoulade on the side
- Keep it simple with steamed vegetables and warm cornbread
- Flake it into po' boy sandwiches with crisp lettuce and ripe tomato
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Open archive →Blackened Catfish with Cajun Remoulade
Pan-seared catfish fillets coated in a smoky cayenne-forward spice blend, served with a tangy remoulade that balances the heat with creamy richness.
Prep
15 min
Cook
8 min
Active
23 min
Total
23 min
Yield
4 servings
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Recipe notes
Before you cook
There's something magical about blackening fish—it's not about charring it to death, but creating a deeply seasoned crust that seals in all the juices while delivering that soul-warming Cajun heat. This technique turns mild catfish into something bold and memorable, the kind of dish that brings everyone to the table. The creamy remoulade is your cooling companion, cutting through the richness with just the right amount of tang and brightness.
Total time
23 min
Prep: 15 min. Cook: 8 min.
Yield
4 servings
The ingredient quantities below are for this yield.
Method
How to cook it
Use the step navigator to move around, or stay in cook mode and work top to bottom.
- 1
Step 1 of 4
Make the remoulade and prep the spice blend
Whisk together mayonnaise, creole mustard, capers, lemon juice, hot sauce, celery, green onions, and garlic in a bowl. Set this aside while you cook the fish. In a shallow dish, combine all your blackening spices and mix them well.
- 2
Step 2 of 4
Coat the catfish with spices
Brush each catfish fillet generously with melted butter on both sides. Press the fillets into your spice mixture, coating them completely and patting gently so everything sticks. They should look almost black with all that beautiful seasoning.
- 3
Step 3 of 4
Heat the skillet to smoking
Set your cast iron skillet over medium-high heat and give it about 4 minutes to get blazing hot. You want to see a bit of smoke before you add the fish. Skip the oil—the butter on the fish gives you all the fat you need.
- 4
Step 4 of 4
Blacken the catfish
Carefully lay the seasoned fillets in the hot skillet and resist the urge to peek or move them for a full 3 minutes. Flip once and cook another 2-3 minutes until the fish flakes easily. Those spices will darken beautifully and smell absolutely incredible.
Troubleshooting
Tips that matter
- Cast iron is your best friend here—it holds heat like nobody's business and gives you that superior browning you're after
- Make sure to pat that fish bone dry before seasoning, or those spices will just slide right off
- Don't toss leftover blackening spice—it's fantastic on chicken, shrimp, or even roasted vegetables
Substitutions and variations
Storage and leftovers
Plan ahead and reheat well
Make ahead
The remoulade actually improves over time—make it up to 2 days ahead and keep it chilled. You can mix that blackening spice blend up to a week ahead and store it in an airtight container.
Storage
Leftover cooked fish keeps in the fridge for up to 2 days. That remoulade will stay fresh for up to 5 days refrigerated.
Reheat
Gently warm the fish in a 300°F oven for 8-10 minutes, or just flake it cold into salads or po' boy sandwiches.
At the table
Serving suggestions
- Pile it over dirty rice with that remoulade on the side
- Keep it simple with steamed vegetables and warm cornbread
- Flake it into po' boy sandwiches with crisp lettuce and ripe tomato
FAQ
Common questions
Can I use frozen catfish fillets?
Absolutely, just thaw them completely and pat them really dry. Frozen fish tends to hold more water, which can get in the way of good browning.
What if I don't have a cast iron skillet?
A heavy-bottomed stainless steel pan will do the job, though the browning might not be quite as even. Just avoid nonstick pans—they can't handle the high heat you need for proper blackening.
How do I know if the pan is hot enough?
You want to see light smoke coming off the pan when you add the fish. If it's not hot enough, those spices will burn before the fish cooks through properly.
Heat profile
Medium heat
The recipe is classified as medium. Use less chile if you prefer milder food.
Skill level
Intermediate
Check the method for steps that need to be prepared at the same time.
Total time
23 min
Prep: 15 min. Cook: 8 min.
Yield
4 servings
The ingredient quantities below are for this yield.
Cook this with
Three useful buys before you start
A sauce, a pantry ingredient, and a kitchen tool to consider for this dish.
Sauce
Los Calientes Rojo
Heatonist · Best for tacos
It brings enough heat to cut through the richer bites without flattening the rest of the dish.
Get the sauce used herePantry
Cajun Seasoning Blend
Fast crust
Salmon, fries, wings, and roasted vegetables. A no-nonsense seasoning for salmon, fries, wings, and sheet-pan dinners when you want flavor in under thirty seconds.
Grab the pantry stapleGear
12-Inch Cast Iron Skillet
Kitchen staple
Weeknight proteins and pan sauces. The sear-and-char pan for smash burgers, fajitas, cornbread, and anything that likes hard edges.
Use this toolPair this with
The right bottle for this recipe
These sauce picks are matched to the dish itself, not dropped in at random. Use them to finish, sharpen, or push the heat where it helps.
Los Calientes Rojo
It brings enough heat to cut through the richer bites without flattening the rest of the dish.
Heatonist Los Calientes Rojo: flavor notes, heat level, and suggested food pairings.
Yellowbird Habanero
It brings enough heat to cut through the richer bites without flattening the rest of the dish.
A bright, carrot-forward bottle with enough heat to stay lively and enough sweetness to stay versatile.
Shop the pantry
Pantry staples for this recipe
Fast crust
$6-$12Cajun Seasoning Blend
Salmon, fries, wings, and roasted vegetables. A no-nonsense seasoning for salmon, fries, wings, and sheet-pan dinners when you want flavor in under thirty seconds.
Check price on AmazonSweet heat
$10-$16Mike's Hot Honey
Finishing sweet-spicy dishes. The fast-track drizzle for pizza, fried chicken, salmon, Brussels sprouts, and hot sandwiches.
Check price on AmazonSmoky shortcut
$4-$10Chipotle Peppers in Adobo
Burger sauce, chili, and taco fillings. The pantry move for smoky mayo, burger sauce, taco braises, and chili that tastes like you actually thought ahead.
Check price on AmazonRecommended equipment
Cooking tools
Kitchen staple
$25-$4512-Inch Cast Iron Skillet
Weeknight proteins and pan sauces. The sear-and-char pan for smash burgers, fajitas, cornbread, and anything that likes hard edges.
Check price on AmazonDIY hot sauce
$20-$35Fermentation Jar Kit
Homemade sauce projects. A clean starter kit for building fermented hot sauces and pepper mash at home.
Check price on AmazonCook next
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FlamingFoodies picks
Pantry, gear, and bottle picks that fit this meal
Everyday bottle
Yellowbird Habanero Hot Sauce
Bright carrot-habanero heat with enough body to work on eggs, tacos, and roasted vegetables. Best for breakfasts, tacos, and meal prep bowls.
View on AmazonNumbing heat
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