Can I make Air Fryer Low-Carb Cajun Blackened Catfish ahead of time?

You can prep the ingredients and seasoning ahead, but air fry close to serving for the best texture.

How do I keep this recipe from turning soggy?

Cook in a single layer, leave space for airflow, and avoid adding too much oil or sauce before the food has crisped.

Can I adjust the seasoning?

Yes. Keep the same cooking method and adjust salt, spice, herbs, citrus, or sauce to match your taste.

How do I know the catfish fillets (about 6 oz each is done?

Use the visual cues in the instructions first: the outside should be browned or crisp and the center should be hot and tender. For meat or seafood, confirm doneness with a food thermometer.

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Seafood

Air Fryer Low-Carb Cajun Blackened Catfish

Name: Air Fryer Low-Carb Cajun Blackened Catfish
Prep time: 10 min
Cook time: 12 min
Total time: 22 min
Yield: 4 servings
Cuisine: Southern American
Ingredients: 4 catfish fillets (about 6 oz each, skin removed); 2 tablespoons smoked paprika; 1 tablespoon garlic powder; 1 tablespoon onion powder; 1 tablespoon dried oregano; 1 tablespoon dried thyme; 2 teaspoons cayenne pepper (adjust to taste); 1 teaspoon black pepper; 1 teaspoon salt; 1/2 teaspoon ground cumin; 2 tablespoons olive oil or avocado oil; Lemon wedges, for serving; Chopped fresh parsley, for garnish (optional)

By Airfryfeast Test KitchenReviewed by Airfryfeast Editorial TeamPublished Apr 12, 2026 · Updated Jun 16, 2026

Southern American 22 mins air-fryer-friendlyhealthylow-carbgluten-freequickeasycrisphigh-proteinspicyfamily-friendly30-minutes-or-lessweeknight-dinnerv2

A quick and flavorful Southern American seafood recipe featuring catfish fillets seasoned with a spicy, low-carb Cajun blackening spice blend and crisped perfectly in the air fryer. Gluten-free, high-protein, and family-friendly, ideal for a satisfying and healthy weeknight dinner.

Air Fryer Low-Carb Cajun Blackened Catfish

Prep 10 min

Cook 12 min

Total 22 min

Servings 4

Difficulty easy

Cuisine Southern American

Ingredients

Servings 4

4 catfish fillets (about 6 oz each, skin removed)
2 tablespoons smoked paprika
1 tablespoon garlic powder
1 tablespoon onion powder
1 tablespoon dried oregano
1 tablespoon dried thyme
2 teaspoons cayenne pepper (adjust to taste)
1 teaspoon black pepper
1 teaspoon salt
1/2 teaspoon ground cumin
2 tablespoons olive oil or avocado oil
Lemon wedges, for serving
Chopped fresh parsley, for garnish (optional)

Ingredients for Air Fryer Low-Carb Cajun Blackened Catfish

Instructions

Preheat your air fryer to 400°F (200°C) for 5 minutes.
In a small bowl, mix smoked paprika, garlic powder, onion powder, dried oregano, dried thyme, cayenne pepper, black pepper, salt, and ground cumin to make the Cajun blackening spice blend.
Pat the catfish fillets dry with paper towels to help the spice rub stick.
Brush each fillet lightly with olive or avocado oil on both sides.
Sprinkle the Cajun spice blend generously over each fillet, pressing gently to coat evenly.
Arrange the seasoned fillets in a single layer in the air fryer basket, avoiding overcrowding for optimal crisping.
Air fry at 400°F (200°C) for 10-12 minutes, flipping halfway through for even blackening and crisp crust.
Check doneness: the fish should flake easily with a fork and reach an internal temperature of 145°F (63°C).
Remove fillets carefully and let rest for 1-2 minutes.
Garnish with chopped fresh parsley and serve immediately with lemon wedges for a bright, fresh finish.

Air Fryer Low-Carb Cajun Blackened Catfish cooking in the air fryer

Tips

Air Fryer Model Notes

Cook Air Fryer Low-Carb Cajun Blackened Catfish in a single layer when possible. Basket models may need batches; oven-style models may need a tray rotation halfway through for even browning.

Crispiness Control

Pat the catfish fillets dry, avoid crowding, and use only a light coat of oil or sauce before cooking. Add wet sauces near the end when you want the outside to stay crisp.

Doneness Cues

Look for browned edges, a hot center, and the texture described in the instructions. For meat or seafood, confirm doneness with a thermometer instead of relying only on color.

Reheat In The Air Fryer

Reheat leftovers at 325 F to 350 F in a single layer until hot and crisp again. Add fresh herbs, citrus, or sauce after reheating.

Frequently Asked Questions

Can I make Air Fryer Low-Carb Cajun Blackened Catfish ahead of time?: You can prep the ingredients and seasoning ahead, but air fry close to serving for the best texture.
How do I keep this recipe from turning soggy?: Cook in a single layer, leave space for airflow, and avoid adding too much oil or sauce before the food has crisped.
Can I adjust the seasoning?: Yes. Keep the same cooking method and adjust salt, spice, herbs, citrus, or sauce to match your taste.
How do I know the catfish fillets (about 6 oz each is done?: Use the visual cues in the instructions first: the outside should be browned or crisp and the center should be hot and tender. For meat or seafood, confirm doneness with a food thermometer.

Ingredient Replacements

If substitutions are needed for dietary needs or ingredient availability, consider these options:

Catfish fillets: Swap with tilapia, cod, or haddock for a similar texture and air fryer performance.
Smoked paprika: Use regular paprika combined with smoked sea salt or chipotle powder for a smoky flavor alternative.
Olive or avocado oil: Grapeseed or sunflower oil are good light oil substitutes for brushing the fillets.
Cayenne pepper: Replace with red chili powder or crushed red pepper flakes to adjust spiciness as desired.
Oregano and thyme: Italian seasoning or dried basil can provide different herbal notes.
Milder version: Reduce or omit cayenne pepper for kid-friendly, less spicy meals.
Lemon wedges: Use lime wedges or a splash of apple cider vinegar to add acidity and brightness.

These alternatives maintain the recipe’s gluten-free, low-carb, and quick preparation benefits while adapting to personal preferences and pantry ingredients.

Storage

Store leftover Air Fryer Low-Carb Cajun Blackened Catfish in an airtight container in the refrigerator for up to 3 days. Cool the food before sealing so excess steam does not soften the texture.

Freeze only if the main ingredient and coating are freezer-friendly. Wrap tightly and freeze for up to 1 month, then thaw overnight in the refrigerator before reheating.

Reheat in the air fryer at 325 F to 350 F in a single layer until hot and crisp again. Add fresh herbs, citrus, or sauce after reheating for the best flavor.

Read related air fryer guides and cooking tips.

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Air Fryer Low-Carb Cajun Blackened Catfish

Recipe Details

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