Garlic lime mahi-mahi marinates firm fillets in bright lime zest, avocado oil, and plenty of garlic, then steams them gently in the same pan. The fish stays tender and flaky under a garlicky citrus glaze. Dinner lands on the table in about 25 minutes.
Preparation Time: 15 minutes Cooking Time: 10 minutes Marinating Time: 30 minutes Servings: 4
Ingredients
- 4 Mahi-Mahi filets, approximately 16 to 20 oz (450g to 560g) total
- Zest and juice of 1 large fresh lime, approximately 2 tbsp (1 fl oz / 30ml) of juice
- 0.25 cup (2 fl oz / 55g) avocado oil
- 3 cloves garlic, minced, approximately 1 tbsp (0.5 oz / 15g)
- 0.125 tsp (0.02 oz / 0.5g) fine grain sea salt
- 0.125 tsp (0.02 oz / 0.5g) ground black pepper
Step-by-Step Instructions
- For the marinade, thoroughly combine the zest and juice of 1 large fresh lime, 0.25 cup (2 fl oz / 55g) avocado oil, 3 minced garlic cloves, 0.125 tsp (0.5g / 0.02 oz) fine grain sea salt, and 0.125 tsp (0.5g / 0.02 oz) ground black pepper in a small-sized mixing bowl.
- Pour the mixed marinade over the 4 Mahi-Mahi filets (16 to 20 oz / 450 to 560g) inside a large zip-lock bag or a large shallow dish, ensuring each filet is fully coated.
- Let the filets sit and marinate for exactly 30 minutes at room temperature.
- Transfer the marinade from the bag or dish directly into a large sauté pan with a cover, placing it over medium heat until the liquid becomes hot.
- Carefully place the marinated Mahi-Mahi filets into the hot pan, cover with the lid, and cook for 4 to 5 minutes on each side until the fish is fully cooked through and flakes easily.
- Immediately remove the sauté pan from the heat source, set it aside, and let the fish rest covered for 5 minutes before serving warm.
Garlic Lime Mahi-Mahi Nutritional Profile (Per Serving)
- Calories: 248 kcal
- Total Fat: 14g (0.5 oz)
- Saturated Fat: 1.7g (0.06 oz)
- Total Carbohydrates: 0.7g (0.02 oz)
- Dietary Fiber: 0.1g (0.003 oz)
- Sugars: 0g (0 oz)
- Protein: 24g (0.85 oz)
Chef's Pro Tips
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- Watch the Marination Time: Because lime juice is highly acidic, marinating the Mahi-Mahi for longer than 30 minutes will cause the citric acid to "cook" the fish (similar to ceviche), resulting in a mushy texture. Set a timer!
- Pat the Filets Dry: If you decide to use a different cooking method like grilling or searing without the marinade liquid, always pat the fish completely dry with a paper towel first. This guarantees a beautiful golden-brown crust instead of steaming the fish.
- Check the Temperature: Mahi-Mahi is incredibly lean and can dry out quickly if overcooked. For the perfect tender flake, use a meat thermometer and pull the fish off the heat the moment the thickest part reaches an internal temperature of 145°F (63°C).
- Perfect Pairings: To keep this meal strictly low-carb and aligned with your nutritional profile, serve the fish over a bed of cilantro-lime cauliflower rice or alongside roasted asparagus sautéed in grass-fed butter.
Frequently Asked Questions (FAQ)
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Q: Is Garlic Lime Mahi-Mahi keto-friendly? A: Yes, absolutely! Mahi-Mahi is a naturally zero-carb, high-protein fish. With this specific garlic and lime oil marinade, a full serving contains just 0.7g (0.02 oz) of total carbohydrates and 14g (0.49 oz) of healthy fats, making it a perfect fit for keto, paleo, and low-carb diets.
Q: Can I use frozen Mahi-Mahi filets for this recipe? A: You can use frozen Mahi-Mahi, but you must thaw it completely before marinating. The safest way is to let the filets thaw overnight in the refrigerator. Before adding the marinade, pat the thawed fish completely dry with a paper towel to remove excess moisture, which prevents a watered-down sauce.
Q: What are the best fish substitutes for Mahi-Mahi? A: If you cannot find fresh or frozen Mahi-Mahi, look for other firm, white-fleshed fish that can hold up well in a pan. Halibut, swordfish, cod, or even snapper make excellent substitutes that will pair beautifully with the garlic lime marinade.
Q: How long does cooked Mahi-Mahi last in the fridge? A: Leftover cooked Mahi-Mahi can be stored in a sealed, airtight container in the refrigerator for up to 3 days. To reheat without drying it out, gently warm it in a skillet over low heat with a splash of water or a small pat of butter.
Pro Tips
- Set a timer for the 30-minute marinade — lime juice is strong enough to start cooking the fish like ceviche, and longer turns the fillets mushy.
- Pour the marinade into the pan and bring it hot before laying the fillets in; the fish cooks in its own fragrant liquid under the lid.
- Let the fish rest 5 minutes off the heat, still covered, so the juices settle into the flakes.
- If you grill or sear instead, pat the fillets dry first for a golden crust — the marinade alone will steam them.
- Pull the mahi-mahi the moment the thickest part hits 145°F (63°C); this lean fish goes dry fast past that point.
Frequently Asked Questions
Can I marinate the mahi-mahi overnight?
No — keep it to exactly 30 minutes. The citric acid will break down the flesh and leave it mushy if it sits longer.
Can I use frozen mahi-mahi fillets?
Yes — thaw them fully and pat them dry before marinating so the lime-garlic mixture coats the fish evenly.
Is garlic lime mahi-mahi keto?
Very much so — 0.7g of carbs and 14g of fat per serving, and it pairs perfectly with cauliflower rice.
How do I store leftovers?
Refrigerate the cooked fillets up to 2 days and serve them cold over salad; reheating dries out lean mahi-mahi.
Recipe card below.
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Ingredients
Method
- For the marinade, thoroughly combine the zest and juice of 1 large fresh lime, 0. 25 cup (2 fl oz / 55g) avocado oil, 3 minced garlic cloves, 0. 125 tsp (0. 5g / 0.18 oz) fine grain sea salt, and 0. 125 tsp (0. 5g / 0.18 oz) ground black pepper in a small-sized mixing bowl.
- Pour the mixed marinade over the 4 Mahi-Mahi filets (16 to 20 oz / 450 to 560g) inside a large zip-lock bag or a large shallow dish, ensuring each filet is fully coated.
- Let the filets sit and marinate for exactly 30 minutes at room temperature.
- Transfer the marinade from the bag or dish directly into a large sauté pan with a cover, placing it over medium heat until the liquid becomes hot.
- Carefully place the marinated Mahi-Mahi filets into the hot pan, cover with the lid, and cook for 4 to 5 minutes on each side until the fish is fully cooked through and flakes easily.
- Immediately remove the sauté pan from the heat source, set it aside, and let the fish rest covered for 5 minutes before serving warm.
- Pat the Filets Dry: If you decide to use a different cooking method like grilling or searing without the marinade liquid, always pat the fish completely dry with a paper towel first. This guarantees a beautiful golden-brown crust instead of steaming the fish.
- Check the Temperature: Mahi-Mahi is incredibly lean and can dry out quickly if overcooked. For the perfect tender flake, use a meat thermometer and pull the fish off the heat the moment the thickest part reaches an internal temperature of 145°F (63°C).
