The Best Cast Iron Blackened Grouper Recipe

The Best Cast Iron Blackened Grouper Recipe

Fresh blackened grouper seasoned with your favorite spices and seared in a cast-iron skillet makes for an easy dinner in under 30 minutes.

Cast Iron Blackened Grouper | Fresh grouper seasoned with blackened spices and seared in a cast-iron skillet.

There’s nothing like the flavor of fresh grouper to celebrate summer.

Every trip to south Florida or anywhere on the gulf of Mexico I never hesitate to order this favorite fish.

From the grill.

On a sandwich.

And even battered and fried.

Any time we are down south we always order fresh seafood.

My son loves a blackened grouper sandwich.

My husband loves seasoned grouper any way you fix it.

Grouper has a mild yet distinct flavor, somewhere between sea bass and halibut. 

It’s a firm fish when cooked that is flaky, moist and delicious.

 A Cast Iron pan of Blackened Grouper.

What does blackened grouper taste like?

Grouper has a very mild sweet taste similar to sea bass and halibut.

Adding blackening seasoning gives the fish a spicy taste that gives it a darker color when cooked on a grill or in the oven on a baking sheet.

How to make blackened grouper

For this easy recipe, I used blackening seasonings to add a kick of heat and spiciness to the fish.

Blackened seasoning include paprika and cayenne pepper with a few additional thrown in. It’s about the heat.

We also love jerk seasoning on fish.

The possibilities are endless.

Searing grouper is best in a cast iron skillet because the pan can get hot quickly then go right into the oven to finish cooking.

Depending on the thickness of your fish filet, you’ll want to watch closely so as not to overcook and dry out the grouper.

 A plate of Cast Iron Blackened Grouper with vegetables.

Tips for the best tasting grouper

  • Select grouper filets that are 1 to 1 1/2 inches thick.
  • Season all sides of the fillets with the spice mixture.
  • You need a hot pan before adding fish filets.
  • Place fish in pan. It should sizzle when adding it to the hot oil.
  • Searing the fish before finishing it in the oven gives this fresh fish a crisp crust.
  • Check that the fish flakes when testing for doneness.
  • Squeeze fresh lemon juice over the fish.

Serve this grouper fish on slider buns with coleslaw and homemade French fries, with roast potatoes, on a plate with roasted veggies, or in your favorite fish tacos.

A bite of blackened Grouper on a fork

Serve these side dishes with blackened grouper






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Cast Iron Blackened Grouper

Ali Randall
Fresh grouper seasoned with your favorite blackened spices and seared in a cast-iron skillet makes for an easy dinner in under 30 minutes.
5 from 1 vote
Prep Time 10 minutes
Cook Time 10 minutes
Total Time 20 minutes
Course Main Course
Cuisine American
Servings 2


  • 2 4 to 6 ounce grouper fillets
  • 1 tablespoon jerk or Cajun seasoning
  • 1 tablespoon olive oil
  • Fresh lemon wedges


  • Preheat the oven to 425°F. Pat the fish dry with paper towels and sprinkle the fillets with jerk or Cajun seasoning.
  • Heat the olive oil in a large cast-iron skillet over medium high heat. Place each fillet seasoned side down into the hot oil.
  • Cook for one minute per side until the edges have browned slightly. Transfer the cast iron skillet to the oven.
  • Bake the fish for 5 minutes or until the fish is flaky when tested with a fork. Remove the cast iron skillet from the oven and serve.
Keyword Blackened Grouper
 Cast Iron Blackened Grouper | | Fresh grouper seasoned with your favorite blackened spices and seared in a cast-iron skillet makes for an easy dinner in under 30 minutes. #blackened #grouper #castiron

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15 thoughts on “The Best Cast Iron Blackened Grouper Recipe”

  • This is such an easy recipe and full of flavor. Do you recommend a cajun seasoning brand?

    • I think anything that is Jamaican Jerk would be fantastic on this recipe. Even something creole would work on grouper. You just can’t go wrong.

  • Ooo! I love everything cajun!! I think I’ve trained my son to like as much as me! Hehe. I’ve never tried grouper, so if it gives me an excuse to use Cajun seasonings, I"m all in! 🙂

    • Grouper is pretty mild so I think your son would love it. My kids love anything cajun or jerk seasoned. I think it pairs great with fish. Thanks Jessica 🙂

  • I love grouper, but I’ve never made it at home! Your recipe looks like a major winner. Can’t wait to try!

    • It’s so easy to make at home and tastes so good. Thanks Kim. Let me know how it turns out.

  • I love grouper and I love cooking in my cast iron skillet, so this recipe is a win-win in my book! I’m pinning this to try soon, thanks!

  • Such a good recipe with all that creole and Cajun seasoning going on. I am a vegetarian so can’t do the grouper but can smell the seasoning on that..

  • This blackened grouper recipe on Pinterest sounds delicious but I can’t find the rest of the recipe beyond #2 on the instructions.

    • Thanks Donna for that catch (no pun intended). I updated the recipe with the rest of the instructions. I am finding a few deletions as a result of my recent redesign and website migration. I hope you give this recipe and try and let me know how it turns out. 🙂

  • 5 stars
    Your instructions were spot on and it turned out perfectly! I did take the fish out of the oven at 4 minutes rather than 5. One of the easiest and quickest meals ever!

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