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Onion-Crusted Yellowtail

Indulge in the irresistible flavors of this incredible Onion-Crusted Yellowtail, it’s absolutely delicious and definitely a must-try yellowtail recipe!

Featuring tender pen-fried yellowtail fish encased in a crunchy fried onion crust, this recipe elevates seafood to new heights, delivering a symphony of taste and texture that’s simply unforgettable.

Complete with homemade mango salsa and key lime butter, prepare to be wowed as the sweet, succulent flesh of yellowtail meets the tangy flavors to create a harmonious blend that will leave your taste buds singing with delight.

With its crispy exterior and tender, flaky interior, this Onion-Crusted Yellowtail is sure to become a favorite on your dining table!

Onion-Crusted Yellowtail Recipe

Why You’ll Love This Pan-Fried Yellowtail Recipe

  • Flavor Fusion: Experience the marriage of delicate yellowtail with the bold, savory flavors of the onion crust, along with the sweet and tangy mango salsa. Each bite offers a tantalizing blend of sweetness and spice that will keep you coming back for more.
  • Nutritious and Delicious: Packed with essential nutrients and omega-3 fatty acids, yellowtail is not only delicious but also incredibly good for you. Paired with antioxidant-rich onions and mango salsa, this dish is a nutritious powerhouse that satisfies both your taste buds and your body.
  • Simple and Versatile: Whip up this mouthwatering dish with ease and customize it to suit your preferences. Whether you prefer a lighter onion coating or want to add your own twist with herbs and spices, this recipe is endlessly adaptable to your culinary creativity.
  • Eye-Catching Presentation: Impress your guests with its stunning visual appeal, thanks to the golden-brown crust and vibrant mango salsa, creating a feast for the eyes, and making every meal a special occasion.

Ingredients Required

  • Yellowtail fillets: Make sure your fillets are fresh!
  • Vegetable oil: For frying the onion rings and also to pan-fry the fillets.
  • Flour: To coat both the onion rings and yellowtail fillets.
  • Blackening spice: To coat the onion rings before frying.
  • Yellow onion: To make the delicious fried onion rings for the crust!
  • Panko breadcrumbs: To coat the yellowtail fillets.
  • Eggs: To coat the yellowtail fillets.
  • Butter: To make the key lime butter.
  • Key limes: For the key lime butter and mango salsa.
  • Mango: To make the delicious mango salsa.
  • Tomato
  • Green bell pepper
  • Red onion
  • Salt and pepper

How To Make Onion-Crusted Yellowtail

Prepare the key lime butter and mango salsa in advance.

Preheat oil to 350°F (175°C) and coat sliced onions with flour and blackening spice.

Fry the onion rings.

Coat the yellowtail fillets with flour, beaten eggs, chopped onion rings, and panko breadcrumbs.

Pan-fry the yellowtail fillets.

Serve with key lime butter and mango salsa.


Onion-Crusted Yellowtail Recipe
Yield: 4

Onion-Crusted Yellowtail

Onion-Crusted Yellowtail Recipe

With a crust made with fried onion rings, this yellowtail dish is absolutely delicious and definitely a must-try!

Prep Time 20 minutes
Cook Time 15 minutes
Total Time 35 minutes



  • vegetable oil, for frying
  • 1½ cups flour, divided
  • 1 tbsp blackening spice
  • 4 yellowtail fillets, 6-8 oz each, blood line and pin bones removed
  • 1 large yellow onion, sliced
  • ½ cup panko breadcrumbs
  • 2 eggs, beaten

Key Lime Butter (prep in advance)

  • 1 stick butter
  • ¼ cup dry white wine
  • 6 key limes, juiced

Mango Salsa (prep in advance)

  • 4 fresh key limes, juiced
  • 1 mango (ripe), diced
  • 1 tomato, diced
  • 1 green bell pepper, diced
  • ½ red onion, diced
  • salt and pepper, to taste


  1. Prepare key lime butter and mango salsa in advance. For the key lime butter, melt the butter over medium heat, then add wine and key lime juice. Mix well then let it cool to room temperature. For the mango salsa, add all the ingredients to a mixing bowl and combine well.
  2. Preheat enough oil in a fryer or deep pan to 350°F (175°C) to fry the onion rings. Add 1 cup flour and 1 tbsp blackening spice to a medium bowl and mix well. Add sliced onions and toss well to coat, shaking off any excess. Carefully add the onion rings to the heated oil and fry for around 5 minutes or until they turn dark brown. Make sure to stir occasionally. Remove the fried onion rings once done and set aside on a plate or cooling rack with paper towels to absorb the excess oil. Let them cool to room temperature.
  3. Chop the fried onion rings to the size of panko breadcrumbs or pulse with a food processor. Add the chopped onion rings and panko breadcrumbs to a mixing bowl and mix well. Set up another 2 bowls with remaining flour in 1 and beaten eggs in the other. Dredge the yellowtail fillets one by one through flour, eggs, then breadcrumb mixture.
  4. Add vegetable oil to a large pan over medium-high heat. Pan-fry the yellowtail fillets until cooked through and the crust is lightly browned, around 3-4 minutes on each side.
  5. Serve with a topping of key lime butter and mango salsa. Enjoy!

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 1008Total Fat: 35gSaturated Fat: 17gTrans Fat: 1gUnsaturated Fat: 15gCholesterol: 227mgSodium: 602mgCarbohydrates: 72gFiber: 6gSugar: 17gProtein: 102g

Nutrition information is only an estimate and can vary depending on ingredients used.

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