Roasted Mahi Mahi with Leek and Lemon Butter
Prep
15 mins
Cook
25 mins
Servings
4
Difficulty
Easy
This elegant mahi mahi dish comes together in just 40 minutes, making it perfect for a weeknight dinner that still feels special. The mild, flaky fish pairs beautifully with tender roasted leeks and a buttery lemon sauce that's so simple yet impressive. Mahi mahi is packed with lean protein and omega 3 fatty acids, making it a genuinely good choice for your health. What I love most is how forgiving this recipe is, even if you're new to cooking fish. Everything roasts together on one pan, which means minimal cleanup and maximum flavor in minimal time.
Ella x
Ingredients
- 4mahi mahi fillets(6 oz each, patted dry)
- 4leeks(white and light green parts only, halved lengthwise)
- 4 tablespoonsunsalted butter(divided)
- 3 tablespoonsfresh lemon juice
- 3garlic cloves(minced)
- 3 tablespoonspanko breadcrumbs
- 2 tablespoonsfresh parsley(finely chopped)
- 1 teaspoonfresh thyme(dried or 1 tablespoon fresh)
- 1 teaspoonsea salt
- ½ teaspoonblack pepper
- 2 tablespoonsolive oil
- 1 teaspoonlemon zest
Detail level
Instructions
- 1
Preheat your oven to 400°F (200°C). Pat the mahi mahi fillets completely dry with paper towels and season both sides generously with salt and pepper.
Tip: Drying the fish ensures a better sear and prevents it from steaming during roasting.
- 2
Clean the leeks by slicing them in half lengthwise and rinsing thoroughly between the layers under running water to remove any dirt. Pat dry and place on a baking sheet.
Tip: Leeks trap soil between their layers, so thorough cleaning is essential.
- 3
Toss the cleaned leeks with 1 tablespoon of olive oil, half the salt, and a pinch of pepper. Arrange them cut-side down on the baking sheet and roast for 12 minutes until they begin to soften and develop light golden color.
- 4
While leeks roast, melt 1 tablespoon of butter with the remaining 1 tablespoon of olive oil in a large oven-safe skillet over medium-high heat. Add minced garlic and sauté for 30 seconds until fragrant.
Tip: Using a combination of butter and oil prevents the butter from burning at high heat.
- 5
Place the seasoned mahi mahi fillets in the hot skillet and sear for 2-3 minutes on each side until light golden brown. Transfer the skillet to the oven.
Tip: A quick sear creates a flavorful crust while keeping the interior moist.
- 6
Add the partially roasted leeks to the skillet alongside the fish. Drizzle with fresh lemon juice and dot with the remaining 3 tablespoons of butter. Return to the oven and roast for 8-10 minutes until the fish is cooked through and flakes easily with a fork.
Tip: The fish should reach an internal temperature of 145°F (63°C) for optimal texture.
- 7
In a small bowl, combine panko breadcrumbs with chopped parsley, lemon zest, and thyme. Sprinkle this mixture evenly over the roasted fish and leeks.
- 8
Return to the oven for 2 minutes to lightly toast the breadcrumb topping until golden. Remove from heat and serve immediately while hot, spooning the pan juices over each plate.
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