Best Grilled Tuna Steak with Fresh Mango Avocado Salsa

Grilled tuna steak with fresh mango avocado salsa is a summer favorite that’s crispy on the outside, tender on the inside, and bursting with tropical flavors. After making this many times, I’ve discovered the secret to a perfect sear every time. Jump to the recipe card or keep reading for my best tips. If you love recipes like this, you’ll also enjoy Easy Ginger Garlic Broth with Rice Noodles and Creamy Sundried Tomato Lentils for Easy Dinner.

Why This Best Grilled Tuna Steak with Fresh Mango Avocado Salsa Is Pure Comfort
- Crispy exterior with a tender, flaky interior
- Tangy, sweet, and slightly spicy mango avocado salsa
- Ready in just 20 minutes – better than takeout!
- Easy, healthy, and packed with protein
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 steaks
- Mango
- Avocado
- Red onion
- Jalapeño
- Fresh cilantro
- Lime juice
- Olive oil
- Salt
- Pepper
- Garlic powder
- Paprika
- Chili powder
- Cumin
- Oregano
- Red pepper flakes
- Optional: Fresh cilantro
- Optional: Lime wedges
- Optional: Crumbled feta or cotija cheese

📝 Ingredient Notes
- Tuna steaks: Thick-cut, about 1-inch thick, for best results.
đź›’ Tools & Equipment I Recommend
- Cast iron skillet — Even heat distribution for perfect searing. → See on Amazon
- High-quality chef's knife — Effortless slicing and dicing for precise cuts. → See on Amazon

How to Make Best Grilled Tuna Steak with Fresh Mango Avocado Salsa
- Prepare the salsa: Dice the mango, avocado, and red onion. Finely chop the jalapeño and cilantro. Combine all in a bowl with lime juice, salt, and pepper. Set aside.
- Season the tuna: Mix garlic powder, paprika, chili powder, cumin, oregano, and red pepper flakes. Press onto both sides of the tuna steaks. Drizzle with olive oil.
- Grill the tuna: Preheat a grill or cast iron skillet to high heat. Cook the tuna for 4-5 minutes per side for medium-rare. Let rest for 5 minutes.
- Serve: Slice the tuna and serve with the mango avocado salsa. Garnish with fresh cilantro and lime wedges, if desired.
Cook's Tips for Perfect Best Grilled Tuna Steak with Fresh Mango Avocado Salsa
- : For even cooking, make sure your tuna steaks are the same thickness.
- Common mistake and fix: Avoid overcooking the tuna – it becomes dry and tough. Use a meat thermometer if needed (125°F for medium-rare).
- : To make the salsa less spicy, remove the seeds and membranes from the jalapeño.
- : For a smoky flavor, grill the tuna on a charcoal grill or use wood chips in a gas grill.
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: Prepare the salsa up to 1 day ahead. Store in an airtight container in the fridge.
Freezing Best Grilled Tuna Steak with Fresh Mango Avocado Salsa
Freeze uncooked tuna steaks for up to 6 months. Thaw overnight in the fridge before cooking.
How to Reheat Without Drying It Out
Oven: Reheat in a 350°F oven for 10-15 minutes, until warmed through. Microwave: Reheat in the microwave for 1-2 minutes, until warmed through. Be careful not to overheat.
Recipe Notes
- Chef tip: For a quicker cook time, slice the tuna into steaks from a larger tuna fillet.
- Best substitution: Substitute swordfish or mahi-mahi for the tuna steaks.
- Make-ahead: Prepare the salsa and season the tuna up to 1 day ahead. Cook just before serving.
- Scaling: This recipe can be easily doubled or tripled for a larger crowd.
- Troubleshooting: If the tuna sticks to the grill or skillet, make sure the surface is well-oiled and preheated.
Want to level up this recipe?
Meat thermometer — Ensures perfect doneness every time. → Check price on Amazon
Best Grilled Tuna Steak with Fresh Mango Avocado Salsa

Ingredients
Main Ingredients
- Tuna steaks
- Mango
- Avocado
- Red onion
- Jalapeño
- Fresh cilantro
- Lime juice
- Olive oil
- Salt
- Pepper
Seasonings
- Garlic powder
- Paprika
- Chili powder
- Cumin
- Oregano
- Red pepper flakes
Optional Toppings
- Fresh cilantro
- Lime wedges
- Crumbled feta or cotija cheese
Instructions
- Prepare the salsa: Dice the mango, avocado, and red onion. Finely chop the jalapeño and cilantro. Combine all in a bowl with lime juice, salt, and pepper. Set aside.
- Season the tuna: Mix garlic powder, paprika, chili powder, cumin, oregano, and red pepper flakes. Press onto both sides of the tuna steaks. Drizzle with olive oil.
- Grill the tuna: Preheat a grill or cast iron skillet to high heat. Cook the tuna for 4-5 minutes per side for medium-rare. Let rest for 5 minutes.
- Serve: Slice the tuna and serve with the mango avocado salsa. Garnish with fresh cilantro and lime wedges, if desired.
Notes
- Chef tip: For a quicker cook time, slice the tuna into steaks from a larger tuna fillet.
- Best substitution: Substitute swordfish or mahi-mahi for the tuna steaks.
- Make-ahead: Prepare the salsa and season the tuna up to 1 day ahead. Cook just before serving.
- Scaling: This recipe can be easily doubled or tripled for a larger crowd.
- Troubleshooting: If the tuna sticks to the grill or skillet, make sure the surface is well-oiled and preheated.
Storage
- Fridge: Store leftovers in an airtight container in the fridge for up to 3 days.
- Freezer: Freeze uncooked tuna steaks for up to 6 months. Thaw overnight in the fridge before cooking.
- Oven reheat: Reheat in a 350°F oven for 10-15 minutes, until warmed through.
- Microwave reheat: Reheat in the microwave for 1-2 minutes, until warmed through. Be careful not to overheat.
- Make ahead: Prepare the salsa up to 1 day ahead. Store in an airtight container in the fridge.
Nutrition Per Serving
- Calories: 320
- Protein: 36g
- Fat: 16g
- Carbs: 17g
- Fiber: 4g
- Sugar: 7g
- Sodium: 450mg
- Cholesterol: 75mg
- Sat. Fat: 2.5g
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 prepare the salsa up to 1 day ahead. Store it in an airtight container in the fridge.
Overcooking is the most common reason for dry tuna. Use a meat thermometer to ensure it reaches 125°F for medium-rare.
Yes, preheat your oven to high broil. Place the tuna on a lined baking sheet and broil for 4-5 minutes per side.
Store leftover tuna in an airtight container in the fridge for up to 3 days. Avoid freezing cooked tuna as it can become mushy.
No, canned tuna has a different texture and flavor profile. This recipe is best with fresh tuna steaks.
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!






