Mahi Mahi Recipe Broiled: Flaky White Fish With Lemon-Garlic Glaze

Broiled mahi mahi delivers flaky, tender fish with minimal effort and maximum flavor. This method ensures even cooking while creating a caramelized crust that locks in moisture.

The secret lies in a simple lemon-garlic glaze that enhances the fish’s natural sweetness. High heat from the broiler works quickly, perfect for busy weeknights when you want restaurant-quality results at home.

You’ll achieve perfectly cooked fillets with a golden, slightly crisp exterior and a moist, delicate interior. The glaze adds brightness and depth without overpowering the mild flavor of the mahi mahi.

Serve with roasted vegetables or rice for a complete, elegant meal that comes together in under 20 minutes.

Ingredients for Mahi Mahi Recipe Broiled

Pantry staples plus fresh fish. A quick grocery run, tops for this dish.

The mahi mahi is the star here. Look for skin-on fillets about 1-inch thick for even cooking—Whole Foods or a good seafood counter will have the freshest. The skin crisps up nicely under the broiler. If you can only find thicker cuts, just adjust the cooking time. I always ask for the center-cut pieces (they cook more evenly) and check for any bones with my fingers.

No fresh lemons? Bottled lemon juice works in a pinch (about 3 tbsp per lemon). Swap honey for maple syrup or agave if you prefer. The Dijon can be substituted with regular mustard, but it won’t have the same depth. Fresh thyme can replace the oregano if that’s what you’ve got. For extra brightness, add a splash of white wine to the glaze.

This comes together so fast you’ll have dinner on the table in 20 minutes. The glaze keeps in the fridge for 3-4 days, so make extra for a quick meal later. Leftovers? Not likely, but they’ll keep for 2 days in the fridge.

Step-by-Step Instructions for Broiled Mahi Mahi

Here’s how I nail perfectly flaky, glaze-kissed fillets every single time.

Step 1: Prepare the Lemon-Garlic Glaze

In a small bowl, whisk together 3 tbsp extra-virgin olive oil, 0.25 cup fresh lemon juice, 1 tbsp lemon zest, 4 cloves minced garlic cloves, 1 tbsp Dijon mustard, and 1 tbsp honey.

I always let this sit for 5 minutes before using to let the flavors meld. The mixture should look slightly emulsified with a vibrant yellow color. This glaze does triple duty—it tenderizes the fish, adds a bright acidic punch, and creates that beautiful caramelized crust under the broiler.

Step 2: Season and Coat the Fillets

Pat the 1.5 lb mahi mahi fillets completely dry with paper towels—this is non-negotiable for achieving that perfect sear. Place them skin-side down on a broiler-safe pan or wire rack set over a baking sheet.

Season both sides with 1 tsp kosher salt, 0.5 tsp freshly ground black pepper, and 0.5 tsp dried oregano. Brush the top of each fillet generously with about half of the lemon-garlic glaze. The fillets should glisten with a thin, even coating.

Step 3: Broil to Flaky Perfection

Position your oven rack 6 inches from the broiler element and preheat on high. Once scorching hot, broil the fillets for 6-8 minutes until the tops are golden brown and slightly blistered.

Don’t walk away—broilers vary wildly in intensity. You’ll see the edges start to bubble and caramelize. The fish is ready when it flakes easily with a fork but still looks slightly translucent in the very center. For thicker fillets, you might need up to 10 minutes.

Step 4: Rest and Garnish for Serving

Remove the mahi mahi from the oven and immediately brush with the remaining glaze. Let it rest for 3-4 minutes—this allows the juices to redistribute so your first bite isn’t dry.

Sprinkle with 0.25 cup chopped fresh parsley and, if you like heat, a pinch of 0.25 tsp red pepper flakes. The parsley adds freshness that cuts through the richness, while the red pepper flakes give a subtle kick. Serve immediately while the glaze is still sticky and the fish is at its flakiest.

Troubleshooting mahi mahi recipe broiled

Glaze Separation

If your lemon-garlic glaze separates, don’t panic. Just whisk vigorously for 30 seconds to re-emulsify. I find using a small bowl and a fork works better than a whisk for small batches. The Dijon mustard acts as a natural emulsifier to keep it stable. 💡

Uneven Cooking

For fillets of varying thickness, fold the thinner ends under to create even thickness. This prevents overcooking the thin parts while waiting for thicker sections to finish. I use toothpicks to secure the folded sections temporarily.

Sticking to Pan

Prevent sticking by using a wire rack over a baking sheet or a well-seasoned cast iron skillet. Lightly oil the rack or pan before adding the fish. Even with the glaze’s sugar content, this creates a non-stick surface.

Over-Browning Glaze

If your glaze browns too quickly, move the rack to the middle position and finish cooking. The sugar in the honey can burn under intense heat. I check every 2 minutes after the first signs of browning appear.

Dry Fish

Overcooked mahi mahi becomes dry and tough. Pull it from the broiler when it reaches 145°F internal temperature—it will continue cooking while resting. Use an instant-read thermometer for accuracy. The fish should still have a slight translucency in the center. 🌡️

Weak Flavor

If your dish lacks depth, boost the glaze with extra garlic or a pinch of red pepper flakes. I also recommend marinating the fillets in the glaze for 15-20 minutes before broiling for more pronounced flavor penetration.

Frequently Asked Questions