These Blackstone Tuna Steaks are perfectly seared, tender, and packed with flavor. This quick griddle recipe is ideal for weeknight dinners, healthy meals, or summer grilling.
Cooking tuna steaks on a Blackstone griddle is a fast way to prepare a high-protein meal. A simple seasoning of coarse sea salt and black pepper highlights the tuna’s natural flavor while the high heat of the griddle creates a beautifully seared exterior. These steaks cook evenly and quickly, making them a reliable choice for busy evenings—pair with your favorite sides for a complete meal.
Ingredients
Scroll to the recipe card below for exact measurements and nutrition. The ingredient list is short and straightforward.
How to Cook Tuna Steak on Blackstone
Step 1 – Preheat the Blackstone griddle until very hot (about 500–700°F).
Step 2 – Pat the tuna steaks dry with paper towels. Rub half of the avocado oil over all sides of the steaks.
Step 3 – Mix the coarse sea salt and black pepper on a plate. Press both sides of each steak into the seasoning to coat evenly.
Step 4 – Drizzle the remaining oil onto the griddle and spread it with a spatula so the cooking surface is coated.
Step 5 – Place the seasoned tuna steaks on the hot griddle. Sear until a crust forms and the steak releases easily from the surface, about 1–2 minutes.
Step 6 – Flip and sear the other side for another 1–2 minutes until browned.
Step 7 – Optional: use tongs to sear the short sides of the steaks by holding them on their edges for a minute or two. For medium-rare, aim for an internal temperature of about 115–125°F so the center remains pink.
Step 8 – Remove the steaks from the griddle, slice against the grain, and serve immediately.
Blackstone Tuna Steaks
Ingredients
- 4 Tuna Steaks (6–8 ounces each)
- 1 Tablespoon Avocado Oil
- 1/4 cup Black Pepper
- 2 Tablespoons Coarse Sea Salt
Instructions
- Preheat the Blackstone grill to as hot as it will get (approximately 500–700°F).
- Pat the tuna steaks dry. Rub half the oil onto all sides of the steaks.
- Mix together the salt and pepper on a plate. Press both sides of the steaks into the seasoning to coat evenly.
- Drizzle the remaining oil onto the griddle and spread it with a spatula.
- Place the steaks on the griddle and cook until well-seared and the fish releases easily, about 1–2 minutes. Flip and cook the other side 1–2 minutes more. Optionally sear the short sides. Target an internal temperature of 115–125°F for a pink center.
- Remove from the griddle, slice against the grain, and serve immediately.
Recipe Notes
- Cooking Tuna Steaks – Medium-rare is ideal for texture and flavor. If you prefer more done, move steaks to indirect heat on the grill until they reach the desired temperature.
- Seasoning – Salt and pepper work great, but feel free to swap in other seasonings for variation.
- Heat the Griddle – Ensure the griddle and oil are hot before adding steaks to get a proper sear.
Seasoning Variation Ideas
- Blackened seasoning
- Cajun seasoning
- Seasoning salt
- Oregano
- Cayenne pepper
- Fresh ginger
- Paprika
Nutrition Facts
How to Cook on a Skillet
If you prefer to cook indoors, use a cast iron skillet. Heat the oil until the skillet is very hot, then sear the tuna for 1–2 minutes per side—longer for thicker steaks. Remove, slice, and serve.
What to Serve with Tuna Steaks
Tuna pairs well with many sides. Popular options include:
- Sesame seeds and chopped green onions, finished with a squeeze of fresh lime.
- A rice bowl topped with sliced tuna and a spicy sauce.
- A fresh green salad topped with sliced steaks.
- Serve with simple grilled vegetables or roasted potatoes for a heartier meal.
Frequently Asked Questions
Tuna cooks very quickly—watch it closely and remove it when the internal temperature reaches about 115°F for medium-rare. Overcooking is what causes dryness.
Refrigerate leftovers in an airtight container for up to 3–4 days.
Yes. Cook ahi tuna steaks over medium heat on the grill grates. For more control, sear over direct heat and finish over indirect heat if needed.
More Blackstone Seafood Recipes
Blackstone Fish Tacos
Hibachi Salmon
Blackstone Shrimp Fajitas Recipe
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