21 Day Fix Friendly Fresh Herb Roasted Mahi

Y’all, here in Florida we are still waiting on fall. Our temperatures are starting to drop slightly, but daily highs are still around 90 degrees. While I’ve made a few soups and stews lately to try to usher in the season, I also find myself craving light but filling dishes that compliment the heat we are dealing with. That’s how I came up with this roasted mahi recipe!

Last summer my husband planted us an herb garden. Given the fact that I kill most things green that fall prey to me, I’m so proud of the fact that I’ve helped keep our herb garden alive and thriving through our heavy storms and extreme heat. A few of our herbs, like the cilantro, never really sprouted. But the basil has managed to plant itself in the pots that didn’t have any action going on. So, we’ve got basil for days. Or weeks.

You can tweak this recipe with herbs you have on hand. Fresh oregano would be great! You can also measure ingredients like the garlic, sea salt and Old Bay seasoning according to your taste. I love mahi but grouper or swordfish filets would be great too! This recipe comes together quickly. Just make sure to plan ahead so that you marinate the fish in the olive oil and herbs before baking it. This ensures the fish doesn’t dry out during cooking and it really locks in the flavors. If using frozen fish filets just follow the manufacturer’s instructions for thawing.

If following 21 Day Fix, count a small fish filet as your red container (protein), the olive oil as your orange container and use sea salt sparingly. That’s it! The lemon juice, garlic and fresh herbs are all freebies! This is great served with roasted brussels sprouts and rice. I hope you enjoy this recipe as much as we did!

Fresh Herb Roasted Mahi

Oven roasted Mahi filets marinated in fresh garden herbs, olive oil, lemon juice and garlic and topped with Old Bay Seasoning. 

Course Main Course
Keyword 21 Day Fix, clean eating, cooking light, fish, healthy, herb garden, low carb, quick meals, seafood
Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Servings 3


  • 1/4 to 1/2 cup olive oil
  • Juice of 1/2 a lemon
  • 1 tsp sea salt
  • 1 tbsp fresh parsley chopped
  • 1 tbsp fresh basil chopped
  • 1/2 tbsp fresh rosemary coarsely chopped
  • 2-4 cloves garlic minced
  • 2-3 filets Mahi or other steak fish
  • Old Bay to taste


  1. Thaw mahi filets, if frozen.

    Combine olive oil, lemon juice, fresh herbs and garlic in a large Ziplock bag and add mahi filets. Seal bag and move filets around in the marinade to make sure they're coated. Place in refrigerator 1-3 hours until ready to cook.

    Preheat oven to 425 degrees. Sprinkle mahi filets with Old Bay Seasoning and place in a baking dish. Bake for 10-12 minutes or until fish is flaky and cooked through. 

    Garnish with fresh parsley and a lemon slice if desired.

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