High-Protein Air Fryer Blackened Cod

High-Protein Air Fryer Blackened Cod

If you want a fast, flavorful dinner that feels restaurant-quality, this High-Protein Air Fryer Blackened Cod is a must-try. It is crispy on the outside, flaky and juicy on the inside, and coated in a bold, smoky spice blend that brings just the right amount of heat.

Paired with a creamy, tangy dill sauce, this healthy air fryer fish recipe delivers big flavor with minimal effort. It is perfect for busy weeknights, clean eating goals, or anyone looking for a lean, high-protein meal that does not sacrifice taste. Ready in under 20 minutes and incredibly easy to customize, this blackened cod is one of those recipes you will keep coming back to.

Why You Will Love This Cod

• Crispy blackened crust with tender, flaky cod inside: the air fryer gives you a real crust without deep frying.
• Bold smoky spices balanced with a creamy, zesty dill sauce: heat from cayenne and paprika, cool tang from the sauce.
• High-protein, low-carb, and ready in under 20 minutes: about 30 g of protein per serving with almost no carbs.
• Only one tablespoon of oil: the air fryer does the crisping work.
• Easy to customize: the same rub works on tilapia, haddock, mahi-mahi, or salmon.

Ingredients (Serves 4)

For the Cod

• 4 thick-cut cod fillets (about 6 oz each)
• 1 tablespoon olive oil or avocado oil (or 1 tablespoon melted butter for extra richness)

For the Blackened Rub

• 1 teaspoon smoked paprika
• ½ teaspoon garlic powder
• ½ teaspoon onion powder
• ½ teaspoon dried oregano
• ¼–½ teaspoon cayenne pepper (adjust to taste)
• ½ teaspoon salt
• ½ teaspoon cracked black pepper

For the Creamy Dill Sauce

• ½ cup mayonnaise
• 1 tablespoon Dijon mustard
• 1 tablespoon fresh dill, chopped
• 1 tablespoon minced capers or finely chopped pickles
• 1 tablespoon fresh lemon juice
• ½ teaspoon lemon zest

How to Make High-Protein Air Fryer Blackened Cod

1. Preheat your air fryer to 400°F (200°C) for 3–5 minutes.
2. Pat the cod fillets dry with paper towels. This helps the seasoning stick and creates a better crust.
3. Brush the fillets lightly with olive oil or melted butter.
4. Mix all the blackened seasoning ingredients in a small bowl.
5. Coat the cod evenly with the spice rub, pressing gently so it adheres well.
6. Place the fillets in the air fryer basket in a single layer, leaving space between each piece.
7. Air fry for 10–12 minutes, depending on thickness, until the fish flakes easily with a fork and the outside is slightly crisp.
8. Whisk together all the sauce ingredients in a small bowl until smooth and creamy.
9. Serve the blackened cod hot with a generous spoonful of the dill sauce on top or on the side.

Serving Suggestions

Serve this air fryer cod with roasted vegetables, cauliflower rice, or a fresh salad for a complete healthy meal. It also works great in tacos or wraps.

Storage & Meal Prep

Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently in the air fryer at 350°F (175°C) for 3–4 minutes to keep the texture crisp. The dill sauce can be stored separately for up to 4 days and also works well as a dip or sandwich spread. This recipe is great for meal prep — cook the cod fresh, then store portions with vegetables for an easy high-protein lunch or dinner throughout the week.

Nutrition (Per Serving)

Serves 4. Each serving has about 360 calories, 30 g protein, 1 g carbohydrates, and 26 g fat, calculated from the actual quantities: 4 cod fillets of about 6 oz each, 1 tablespoon olive oil, and the full creamy dill sauce with regular mayonnaise. Most of the fat comes from the sauce — for a lighter version, use light mayonnaise or swap half of it for Greek yogurt, which brings a serving to about 255 calories and 14 g of fat with the same 30 g of protein.

Tips & FAQs

Can I use frozen cod?
Yes, but thaw it completely and pat it dry before seasoning to avoid excess moisture.

How do I know when cod is fully cooked?
The fish should be opaque and flake easily with a fork. The internal temperature should reach 145°F (63°C).

Can I make this recipe even lower in fat?
Use light mayonnaise or swap half of it for Greek yogurt in the sauce. You can also reduce the oil slightly.

What other fish can I use?
This blackened seasoning works well with tilapia, haddock, mahi-mahi, or even salmon.

Is this recipe good for meal prep?
Yes. Cook the cod fresh, then store portions with vegetables for an easy high-protein lunch or dinner throughout the week.

How spicy is it?
Mild to medium. The ¼ teaspoon of cayenne gives a gentle warmth; use ½ teaspoon if you like real heat. The cool dill sauce balances it either way.