
Roasted Mahi Mahi with Fennel
Prep
15 mins
Cook
25 mins
Servings
4
Difficulty
Easy
This is one of my favorite weeknight dinners because it comes together in just 40 minutes from start to table. Mahi mahi is such a wonderful lean fish that's packed with protein and omega 3 fatty acids, making it both delicious and genuinely good for you. The roasted fennel becomes incredibly sweet and tender, playing beautifully against the bright lemon and fresh thyme. What I love most is how elegant this feels despite being surprisingly simple to pull off. Your guests will think you spent hours in the kitchen when really you've just combined a few quality ingredients and let the oven do most of the work.
Ella x
Ingredients
- 4mahi mahi fillets(6 oz each, patted dry)
- 2fennel bulbs(trimmed and cut into wedges)
- 4 tablespoonsextra virgin olive oil
- 2 tablespoonsfresh lemon juice
- 3garlic cloves(minced)
- 1 tablespoonfresh thyme(chopped)
- 3 tablespoonsunsalted butter
- 1 teaspoonsea salt
- ½ teaspoonblack pepper
- ¼ cupwhite wine
- 2 tablespoonsfennel fronds(for garnish)
Detail level
Instructions
- 1
Preheat your oven to 425°F (220°C). Toss the fennel wedges with 2 tablespoons of olive oil, ½ teaspoon salt, and ¼ teaspoon black pepper on a large baking sheet.
Tip: Cut fennel wedges evenly so they cook at the same rate.
- 2
Roast the fennel for 12-15 minutes until the edges begin to caramelize and soften, stirring halfway through.
- 3
While fennel roasts, pat the mahi mahi fillets dry with paper towels and season both sides with remaining salt and pepper.
Tip: Dry fish prevents sticking and promotes better browning.
- 4
Push the roasted fennel to the sides of the baking sheet and place the seasoned mahi mahi fillets in the center. Drizzle fish with remaining 2 tablespoons olive oil.
- 5
Return the sheet to the oven and roast for 10-12 minutes until the fish flakes easily with a fork and reaches an internal temperature of 145°F.
Tip: Do not overcook mahi mahi as it can become dry; check at 10 minutes.
- 6
While the fish cooks, melt the butter in a small saucepan over medium heat. Add minced garlic and sauté for 30 seconds until fragrant.
- 7
Pour in the white wine and lemon juice, scraping up any browned bits. Simmer for 2 minutes, then stir in chopped fresh thyme.
Tip: This pan sauce adds brightness and depth to the finished dish.
- 8
Transfer the roasted mahi mahi and fennel to serving plates, drizzle generously with the warm herb butter sauce, and garnish with fresh fennel fronds.
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