Cayman Style Mahi Mahi Fillets - Easy Pan-Seared Recipe

Craving a taste of the Caribbean without leaving your kitchen? Look no further than this incredible recipe for Cayman-Style Mahi Mahi with Pepper-Onion Pan Sauce! If you've been searching for flavorful recipes with mahi mahi fillets, you've just hit the jackpot. This dish brings the vibrant, savory, and lightly spicy essence of Caymanian cuisine right to your table, perfect for a weeknight meal or a special occasion.
In this guide, you'll learn:
The unmistakable Cayman style flavor profile, featuring a delightful mix of peppers, onion, tomato, bright lime, Worcestershire for savory depth, aromatic thyme, and the unique warmth of pimento (allspice), often with a hint of Scotch bonnet heat.
How to create a perfectly measured marinade and a quick, easy pan sauce specifically designed to complement tender mahi mahi fillets.
Crucial timing cues by thickness and simple temperature and flake tests to ensure your fish is always cooked to perfection – never dry, always juicy.
Get ready to master cooking fish fillets with a truly authentic Caribbean twist. This recipe is a game-changer for anyone looking for delicious mahi mahi with sauce!

Ingredients

• For the Mahi Mahi & Marinade:
• 4 x 6-oz Mahi Mahi fillets, about ¾–1" thick
• 2 tbsp fresh lime juice (approximately 1 lime)
• 1½ tbsp Worcestershire sauce (don't skip this for hallmark savory depth!)
• 1 tsp brown sugar (a tiny pinch helps balance flavors)
• 1 tsp kosher salt
• ½ tsp black pepper, freshly ground
• ½ tsp ground allspice (also known as "pimento" in Caribbean recipes)
• 2 tsp minced garlic (about 2 cloves)
• 1 tsp fresh thyme leaves
• 2 tbsp sliced scallion (green parts only)
• For the Pepper-Onion Pan Sauce:
• 2 tbsp neutral oil (such as canola, vegetable, or grapeseed), divided
• 1 medium yellow onion, thinly sliced
• 1 red bell pepper, thinly sliced
• 1 yellow bell pepper, thinly sliced
• 1 ripe tomato, diced
• 1 tsp Worcestershire sauce (additional)
• Tiny pinch brown sugar (additional)
• 2–3 tbsp water (or fish stock)
• ½ tbsp unsalted butter, for finishing
• Optional: Thinly sliced Scotch bonnet pepper (or habanero/serrano for swap), to taste
• Important Notes:
  Keep lime juice at about 2 tbsp per pound of fish to prevent a mealy texture.
  Allspice is often called "pimento" in Caribbean cuisine.

Directions

1. Marinate the Mahi Mahi:
   1. Pat the mahi mahi fillets thoroughly dry with paper towels. This helps achieve a better sear.
   2. In a shallow dish, combine the 2 tbsp lime juice, 1½ tbsp Worcestershire, 1 tsp brown sugar, 1 tsp kosher salt, ½ tsp black pepper, ½ tsp ground allspice, 2 tsp minced garlic, 1 tsp fresh thyme leaves, and 2 tbsp sliced scallion. Mix well.
   3. Coat the dry fish fillets evenly with this fish marinade recipe.
   4. Place the marinated fish in the fridge for 20–30 minutes. Do not marinate for longer than 45 minutes for 1-inch thick fillets, as the acid can start to "cook" the fish.
2. Prep the Pan & Sauté the Vegetables:
   1. While the fish marinates, heat 1 tbsp of neutral oil in a large (12-inch) skillet over medium-high heat until shimmering.
   2. Add the sliced yellow onion and bell peppers to the hot pan. Sauté for 3–4 minutes, stirring occasionally, until they are glossy and slightly softened but still have a bite.
   3. Stir in the diced tomato, an additional 1 tsp Worcestershire sauce, and a tiny pinch of brown sugar. Cook for another 1–2 minutes, allowing the flavors to meld.
   4. Scrape the sautéed vegetables into a bowl and set aside.
3. Sear the Mahi Mahi Fillets:
   1. Lightly wipe out the skillet to remove any small bits, but don't wash it.
   2. Return the skillet to medium-high heat and add the remaining 1 tbsp of neutral oil. Heat until it's shimmering and just starting to smoke.
   3. Remove the mahi mahi fillets from the marinade, shaking off any excess. Place the fillets, presentation-side down (usually the smoother, skinless side), into the hot skillet.
   4. Sear the fillets without moving them for 2–3 minutes for ¾-inch thick fish, or 3–4 minutes for 1-inch thick fish, until the edges are golden brown and a beautiful crust has formed.
   5. Flip the fillets carefully and cook for an additional 1–2 minutes on the second side.
4. Finish with the Pan Sauce:
   1. Reduce the heat to medium-low.
   2. Return the sautéed pepper and onion mixture to the pan, nestling it around the fish.
   3. Pour in any remaining marinade from the bowl, along with a splash of water (about 2–3 tbsp). This will deglaze the pan and create your delicious mahi mahi with sauce.
   4. Simmer gently for 1–2 minutes, stirring the sauce around the fish, until the sauce slightly thickens and coats the back of a spoon (nappe consistency).
   5. Stir in the ½ tbsp of unsalted butter until melted and incorporated. This adds a lovely sheen and richness to the sauce.
5. Check Doneness & Rest:
   1. The fish is done when it reaches an internal temperature of 130–135°F at its thickest part. Alternatively, it should flake easily with a fork and look just glossy and opaque, not dry.
   2. Remove the skillet from the heat and let the fish rest in the sauce for 3 minutes. This allows the juices to redistribute, ensuring a tender, moist fillet.
6. Serve:
   1. Carefully transfer the pan cooked mahi mahi fillets to serving plates.
   2. Spoon the vibrant pepper-onion-tomato sauce generously over each fillet.
   3. Finish with a fresh squeeze of lime, a sprinkle of fresh thyme, and thin slices of Scotch bonnet pepper, if desired, for an authentic kick. Enjoy your delicious Caribbean fish dish!