Easy Baked Mahi Mahi is delicious and is a cinch to make! Lightly seasoned fillets are served with browned butter, garlic, herb and lemon sauce.

Do you enjoy seafood dishes? We do at our home, and one of the varieties of fish we really enjoy is Mahi Mahi. Firm in texture and mild in flavor, this is a very versatile fish my husband and I enjoy whenever we can!

Curious about mahi mahi? To learn more interesting facts about Mahi Mahi, its source and nutritional info., etc., check out this info source here.

My husband picks up a big bag of frozen mahi mahi fillets every couple of months from Costco. Each boneless fillet is individually wrapped and the pieces vary in sizes. I’ve featured mahi mahi in other recipes on my blog over the years.

Once my husband brings it home, I know we will be enjoying mahi mahi in our dinner rotation. I found this particular recipe online, and when we want a simple seafood meal, this is one I easily choose. It’s a super easy recipe, requires only a few ingredients and it’s delicious. Here’s how to make easy baked mahi mahi.

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Prepare The Mahi Mahi For Baking

Pat boneless mahi mahi fillets dry using paper towels to absorb the excess moisture. Season each piece lightly with salt and black pepper, on both sides.

TIP: Cover a large baking sheet with aluminum foil, to help minimize your cleanup. This is an optional step, but one I recommend.

Spray the foil generously with non-stick baking spray. Cut a large lemon into 6 thin, round slices. Place two of the lemon slices together (for each piece of fish) on the aluminum foil.

Three boneless mahi mahi fillets are patted dry, then rest on plate before seasoning.

Time To Bake The Mahi Mahi

Place each piece of seasoned mahi mahi on top of two lemon slices. The shape of the fillets may vary slightly, but each piece should weigh about 4 ounces. If the fillet is long, length-wise, place a lemon slice under each end.

Bake the mahi mahi in a preheated 400° F. (204.4°C.) oven for 10-15 minutes. I recommend placing the baking pan on the middle rack in the oven for best heat circulation.

How Will I Know When The Fish Is Done?

The amount of time it takes to bake the fish will obviously depend on the thickness of the fish fillets you use. A “general rule” is that fish should be cooked about 10 minutes per inch of thickness.

A “safe” internal temperature for cooked mahi mahi is between 137°F-145°F. to ensure it is fully cooked through. If you have a meat thermometer, use it, to make sure you don’t undercook OR overcook the mahi mahi.

The fish will only be slightly browned on top, and can be easily flaked with a fork when fully cooked.

Seasoned mahi mahi fillets placed on top of lemon slices on a foil-covered baking sheet.

Make The Garlic Butter Sauce While the Fish Bakes

While the fish bakes, you can quickly make the simple garlic butter and lemon sauce to spoon or drizzle over the finished fish.

Melt butter in a medium-sized saucepan on Medium-Low heat. Continue to cook for a few minutes, stirring often, as you make browned butter.

The butter will begin bubbling, and will turn brown as the milk solids separate, due to the heat. It will also develop a slightly “nutty” aroma as it browns.

Once the butter has melted and browned, stir in minced garlic, and continue cooking for 30 seconds more. Be careful to not let the butter burn, or it becomes bitter in taste.

Butter sauce is made by first melting butter in a saucepan.Browned butter cooking in a saucepan, with minced garlic added for flavor.

Remove the pan from the heat, and stir in fresh lemon juice and fresh (or dried) chopped parsley, until incorporated into the browned butter.

Normally I use fresh parsley from our garden, but when I photographed this, our garden (and house) was covered with 4 inches of snow, so I had no fresh parsley (sigh).

TIP: If using fresh parsley, you will use 1 Tablespoon, but if using dried you will only need 1 teaspoon, because the flavor is more concentrated in dried herbs.

Lemon juice and dried (or fresh) parsley is stirred into the butter (off the heat).

Serve The Easy Baked Mahi Mahi

Once safely cooked to 137-145°F., remove the mahi mahi from the oven. Transfer the mahi mahi immediately (keeping the lemon slices underneath) to serving plates.

Spoon some of the garlic butter “sauce” over each piece of fish, making sure to get lots of minced garlic on each piece! If you have access to fresh parsley, add a couple sprigs to each piece of fish, for a pop of color!

Serve immediately while hot, and dig in! We enjoyed this easy baked mahi mahi served with brown rice and steamed broccoli on the side. It was a nice, light meal. YUM!

Easy baked mahi mahi, served with garlic butter sauce on top, brown rice and broccoli on the side.The easy baked mahi mahi fillet is served on top of lemon slices, on a white plate.

I hope you have the opportunity to try this yummy recipe for easy baked mahi mahi, and trust you’ll enjoy it as much as we do. It’s a simple recipe, but it’s really tasty.

Thank you for stopping by today, and I invite you to come back again soon, for more family-friendly recipes. Take care, may God bless you, and have a GREAT day!

Looking For More MAHI MAHI Or Other SEAFOOD Recipes?

You can find ALL of my recipes in the Recipe Index, which is located at the top of the page. I have a wonderful variety of seafood recipes for you to ch3ck out, including:

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Original recipe source, and with thanks to Angela, at: https://bakeitwithlove.com/baked-mahi-mahi/


5 from 1 vote
Easy Baked Mahi Mahi
Prep Time
10 mins
Cook Time
10 mins
Total Time
20 mins

Easy Baked Mahi Mahi is delicious and is a cinch to make! Lightly seasoned fillets are served with browned butter, garlic, herb and lemon sauce.

Category: Main Dish
Cuisine: American
Keyword: baked mahi mahi
Servings: 3
Calories Per Serving: 202 kcal
Author: JB @ The Grateful Girl Cooks!
  • 12 ounces mahi mahi boneless, approx. 4 oz. each
  • ½ teaspoon salt to season fish (approx.)
  • ½ teaspoon black pepper to season fish (approx.)
  • 6 thin slices lemon
  • 3 Tablespoons butter
  • teaspoons minced garlic
  • 1 Tablespoon fresh lemon juice
  • 1 Tablespoon fresh parsley (chopped) OR 1 teaspoon DRIED parsley
  1. Preheat oven to 400°F (204.4 C). Line a baking sheet with aluminum foil. Spray foil generously with non-stick baking spray.

  2. Pat mahi mahi fillets dry using paper towels to absorb excess moisture. Season fish lightly on both sides with salt/pepper.

  3. Cut large lemon into 6 round slices. Place 2 slices together (for each piece of fish) on the aluminum foil. Place each piece of fish on top of 2 lemon slices.

  4. Bake at 400° F. (204.4°C.) for 10-15 minutes. **Time to fully cook depends on thickness of fillets. A "general rule" is fish should cook 10 minutes per inch of thickness. Fully cooked mahi mahi should have internal temperature between 137°F - 145°F. Use meat thermometer, so fish isn't undercooked OR overcooked. Fish should be slightly browned on top, and flake easily with a fork.

  5. Make Browned Butter Sauce While Fish Bakes: Melt butter in medium saucepan on Medium-Low heat. Cook 3-4 minutes, stirring often, until bubbly and browned; butter will turn brown as the milk solids separate. Stir in garlic; continue cooking for 30 seconds. Remove pan from heat; add lemon juice and parsley (fresh or dried). Stir until combined.

  6. To Serve: Remove fish from oven; Use spatula to transfer mahi mahi (keeping lemon slices underneath) to serving plates. Spoon butter sauce over each piece. Garnish with fresh parsley, if desired. Serve immediately.

Nutrition Facts
Easy Baked Mahi Mahi
Amount Per Serving (1 fillet + sauce)
Calories 202 Calories from Fat 108
% Daily Value*
Fat 12g18%
Saturated Fat 7g44%
Trans Fat 0.5g
Polyunsaturated Fat 1g
Monounsaturated Fat 3g
Cholesterol 113mg38%
Sodium 579mg25%
Potassium 501mg14%
Carbohydrates 1g0%
Fiber 0.2g1%
Sugar 0.2g0%
Protein 21g42%
Vitamin A 669IU13%
Vitamin C 5mg6%
Calcium 27mg3%
Iron 1mg6%
* Percent Daily Values are based on a 2000 calorie diet.

Here’s one more to pin on your Pinterest boards!Easy Baked Mahi Mahi is delicious and is a cinch to make! Lightly seasoned fillets are served with browned butter, garlic, herb and lemon sauce.

Easy Baked Mahi Mahi

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