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Cajun Blackened Tuna Recipe

Atkins Cajun Blackened Tuna
Net Carbs
Prep Time: 5 Minutes
Cook Time: 10 Minutes
Phase: Phase 1
Difficulty: Moderate
* Any adjustments made to the serving values will only update the ingredients of that recipe and not change the directions.









calculator How to Calculate Atkins Net Carbs


  • 1/2 tbsp Paprika
  • 1/2 tsp, leaves Oregano
  • 1/2 tsp Garlic Powder
  • 1/2 tsp Onion Powder
  • 1/2 tsp Salt
  • 1/4 tsp Cumin
  • 1/4 tsp Black Pepper
  • 1/8 tsp Red or Cayenne Pepper
  • 1 tablespoon Unsalted Butter Stick
  • 16 oz, boneless, raw Tuna


  1. Heat oven to 400°F.
  2. Combine paprika, oregano, garlic powder, onion powder, salt, cumin, pepper and cayenne pepper on a plate. Rub room temperature butter over tuna steaks. Press tuna steaks into herb mixture; gently rub herbs onto fish.
  3. Heat a large heavy ovenproof skillet (cast iron works great) over high heat for 2 minutes or until skillet smokes. Cook tuna steaks 1 minute on each side. They will make some smoke this is normal. Transfer skillet to oven and roast fish 5 minutes for medium rare doneness.Cut each steak in half before serving.

Cooking Tip

Have a hard time telling when fish is cooked? If it flakes when scraped by a fork, it's good to go.

How to Calculate Atkins Net Carbs

Atkins Net Carbs = Total Carbohydrates – Fiber – Sugar Alcohols/Glycerin (if applicable)