Best Grilled Tuna Steak with Fresh Mango Avocado Salsa

Grilled tuna steak is a summer favorite, and this recipe is the best! After making it dozens of times, I’ve discovered the trick to a perfect sear and tender interior. The crispy exterior gives way to a juicy, flaky center, while the fresh mango avocado salsa adds a burst of tropical flavor. Jump to the recipe card or keep reading for my best tips. If you love recipes like this, you’ll also enjoy Easy No-Bake Peanut Butter Oat Bars for Quick Snacks and Easy Thai Drunken Noodles Recipe with Fresh Basil and Spice.

Why This Best Grilled Tuna Steak with Fresh Mango Avocado Salsa Is Pure Comfort
- Crispy exterior with a tender, flaky interior
- Tropical mango avocado salsa for a fresh, juicy topping
- Better than takeout and ready in just 20 minutes
- Easy to customize with your favorite seasonings and toppings
What You'll Need for Best Grilled Tuna Steak with Fresh Mango Avocado Salsa
Choosing the right ingredients makes a big difference, but this recipe is forgiving enough to work with what you have.
- Tuna steak
- Mango
- Avocado
- Red onion
- Jalapeño
- Cilantro
- Lime
- Olive oil
- Salt
- Pepper
- Garlic powder
- Chili powder
- Cumin
- Optional: Fresh cilantro
- Optional: Lime wedges
- Optional: Red pepper flakes

📝 Ingredient Notes
- Tuna steak: Thick-cut steaks work best for grilling.
🛒 Tools & Equipment I Recommend
- Cast iron skillet — Even heat distribution for perfect searing. → See on Amazon
- Grill pan — Achieve beautiful grill marks at home. → See on Amazon

How to Make Best Grilled Tuna Steak with Fresh Mango Avocado Salsa
- Prepare the salsa: Dice the mango, avocado, red onion, and jalapeño. Mix with chopped cilantro, lime juice, salt, and pepper. Set aside.
- Season the tuna: Pat the tuna steaks dry and season both sides with salt, pepper, garlic powder, chili powder, and cumin.
- Grill the tuna: Preheat the grill or grill pan to medium-high heat. Grill the tuna steaks for 4-5 minutes on each side, or until cooked to your desired doneness.
- Serve: Top the grilled tuna steaks with the mango avocado salsa and serve with your favorite sides.
Cook's Tips for Perfect Best Grilled Tuna Steak with Fresh Mango Avocado Salsa
- Common mistake and fix: Avoid overcooking the tuna. Use a meat thermometer to check for an internal temperature of 125°F (52°C) for medium-rare.
- Pro tip: Let the tuna steaks rest for 5 minutes before serving to allow the juices to redistribute.
- Pro tip: For a spicy kick, add some diced jalapeño to the salsa or sprinkle red pepper flakes on top.
Storing & Reheating Best Grilled Tuna Steak with Fresh Mango Avocado Salsa
Short-Term Storage
Store in an airtight container in the fridge. Store leftovers in an airtight container in the fridge for up to 3 days. Make-ahead tip: The mango avocado salsa can be made up to 1 day ahead and stored in the fridge.
Freezing Best Grilled Tuna Steak with Fresh Mango Avocado Salsa
Not recommended for freezing.
How to Reheat Without Drying It Out
Oven: Reheat in a preheated 350°F (175°C) oven for 10-15 minutes. Microwave: Reheat in the microwave for 30-60 seconds.
Recipe Notes
- Chef tip: For a quicker cook, you can also pan-sear the tuna steaks in a hot skillet.
- Best substitution: If you can't find fresh tuna, swordfish or mahi-mahi make excellent substitutes.
- Make-ahead: The mango avocado salsa can be made up to 1 day ahead and stored in the fridge.
- Scaling: This recipe can be easily doubled or tripled to serve more people.
- Troubleshooting: If your tuna steaks are sticking to the grill, make sure your grill or grill pan is hot enough and well-oiled.
Want to level up this recipe?
Meat thermometer — Ensure perfect doneness every time. → Check price on Amazon
Best Grilled Tuna Steak with Fresh Mango Avocado Salsa

Ingredients
Main Ingredients
- Tuna steak
- Mango
- Avocado
- Red onion
- Jalapeño
- Cilantro
- Lime
Seasonings
- Olive oil
- Salt
- Pepper
- Garlic powder
- Chili powder
- Cumin
Optional Toppings
- Fresh cilantro
- Lime wedges
- Red pepper flakes
Instructions
- Prepare the salsa: Dice the mango, avocado, red onion, and jalapeño. Mix with chopped cilantro, lime juice, salt, and pepper. Set aside.
- Season the tuna: Pat the tuna steaks dry and season both sides with salt, pepper, garlic powder, chili powder, and cumin.
- Grill the tuna: Preheat the grill or grill pan to medium-high heat. Grill the tuna steaks for 4-5 minutes on each side, or until cooked to your desired doneness.
- Serve: Top the grilled tuna steaks with the mango avocado salsa and serve with your favorite sides.
Notes
- Chef tip: For a quicker cook, you can also pan-sear the tuna steaks in a hot skillet.
- Best substitution: If you can't find fresh tuna, swordfish or mahi-mahi make excellent substitutes.
- Make-ahead: The mango avocado salsa can be made up to 1 day ahead and stored in the fridge.
- Scaling: This recipe can be easily doubled or tripled to serve more people.
- Troubleshooting: If your tuna steaks are sticking to the grill, make sure your grill or grill pan is hot enough and well-oiled.
Storage
- Fridge: Store leftovers in an airtight container in the fridge for up to 3 days.
- Freezer: Not recommended for freezing.
- Oven reheat: Reheat in a preheated 350°F (175°C) oven for 10-15 minutes.
- Microwave reheat: Reheat in the microwave for 30-60 seconds.
- Make ahead: The mango avocado salsa can be made up to 1 day ahead and stored in the fridge.
Nutrition Per Serving
- Calories: 350
- Protein: 35g
- Fat: 18g
- Carbs: 15g
- Fiber: 4g
- Sugar: 10g
- Sodium: 500mg
- Cholesterol: 60mg
- Sat. Fat: 3g
Nutritional values are estimates only. Actual values may vary by brand and portion size.
Best Grilled Tuna Steak with Fresh Mango Avocado Salsa FAQs
Yes, you can make the salsa up to 1 day ahead and store it in the fridge.
Overcooking is the most common reason for dry tuna. Use a meat thermometer to check for an internal temperature of 125°F (52°C) for medium-rare.
Yes, you can use frozen tuna steaks. Thaw them in the fridge overnight before cooking.
Store leftovers in an airtight container in the fridge for up to 3 days.
Yes, you can bake the tuna steaks in a preheated 400°F (200°C) oven for 10-15 minutes, or until cooked to your desired doneness.
A Warm Final Note
I can’t wait for you to try Best Grilled Tuna Steak with Fresh Mango Avocado Salsa and see how effortlessly it comes together. When you make it, pop back here and leave a rating or share how it turned out — I love hearing from you!






