Sheet Pan Mahi Mahi Fajitas

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4.9 (61)

Sheet pan mahi mahi fajitas combine tender fish with onions and bell peppers seasoned with authentic fajita spices for tasty and incredibly easy seafood dinners. This elegant preparation showcases mahi mahi's mild flavor while the sheet pan method ensures even cooking without constant attention. The fajita spices complement rather than overwhelm the delicate fish while creating complete, balanced meals with minimal effort.

Sheet pan mahi mahi fajitas

Mahi mahi, onions, and bell peppers are cooked on a sheet pan with fajita spices. It’s a tasty and easy weeknight meal that can be served in tortillas or over rice with your favorite toppings like tomatoes, sour cream, and avocado.

Prep Time:
20 mins
Cook Time:
25 mins
Total Time:
45 mins
Servings:
4
Yield:
4 servings
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Ingredients

1/2x
1x
2x

Original recipe (1X) yields 4 servings

  • 3 tablespoons olive oil

  • 2 tablespoons lemon juice

  • 2 teaspoons chili powder

  • 1 teaspoon ground cumin

  • ½ teaspoon onion powder

  • ½ teaspoon garlic salt

  • teaspoon black pepper

  • 1 pinch cayenne pepper, or to taste

  • 2 medium bell peppers, sliced

  • 1 large white onion, sliced

  • 4 (4 ounce) mahi mahi fillets, cut into 1-inch slices

Directions

  1. Preheat the oven to 400 degrees F (200 degrees C). Line a large baking sheet with parchment paper.

  2. Stir olive oil, lemon juice, chili powder, cumin, onion powder, garlic salt, black pepper, and cayenne together in a bowl.

  3. Spread bell peppers and onion on the prepared sheet pan. Pour 1/2 the marinade over vegetables; toss until well coated.

  4. Roast vegetables in the preheated oven for 10 minutes.

  5. While vegetables are cooking, place mahi mahi in a bowl and cover with remaining marinade; toss until well coated. Let sit for 10 minutes.

  6. Remove vegetables from the oven and set mahi mahi pieces on top. Return to the oven and cook until fish is cooked through and flakes easily with a fork, about 12 more minutes.

Cook’s Note:

You can also make this recipe with cod or halibut instead of mahi mahi.

Nutrition Facts (per serving)

228 Calories
12g Fat
9g Carbs
22g Protein
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Nutrition Facts
Servings Per Recipe 4
Calories 228
% Daily Value *
Total Fat 12g15%
Saturated Fat 2g9%
Cholesterol 82mg27%
Sodium 344mg15%
Total Carbohydrate 9g3%
Dietary Fiber 2g9%
Total Sugars 4g
Protein 22g44%
Vitamin C 83mg92%
Calcium 40mg3%
Iron 2mg12%
Potassium 695mg15%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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John Davis
John Davis

Hi, I’m John Davis!
Food has always been my favorite way to connect with people, and that’s why I started blogging about it. I love sharing quick, creative recipes that prove cooking at home can be just as exciting as eating out. Whether it’s a speedy weeknight dinner or a fun snack, I enjoy keeping things simple, flavorful, and approachable for everyone. When I’m not experimenting in the kitchen, I’m usually exploring new cuisines or hunting for fresh inspiration at local markets.

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