These Seared Ahi Tuna Steaks with Sriracha Mayo are delicious, healthy, low-calorie, low weight watchers points, and bursting with flavor. I LOVE seared ahi tuna - it takes just minutes to cook and this homemade marinade with sesame oil and soy sauce brings it to a whole new level.

What do I need to make these seared ahi tuna steaks with sriracha mayo?
The best part of this seared ahi tuna with sriracha mayo is the marinade. It takes a few minutes to throw together, only contains a few ingredients, and is SO flavorful. Here's what you need for the marinade:
- Soy sauce
- Sesame oil
- Ginger (I use the ginger in a tube, as you can see in the picture below)
- Salt & pepper
- Garlic powder
You can marinade the ahi tuna steaks for as little as an hour, or up to overnight. I personally like marinading the the tuna for at least a few hours, as this really brings the flavor out. It's also worth noting that I got my tuna steaks from Fish Fixe, which is a monthly fresh fish subscription.
To make the lighter sriracha mayo, you just need to ingredients:
- Light mayo
- Sriracha
Last, the following two ingredients are completely optional and are just for garnish - that said, it takes the seared ahi tuna steaks up a notch and I recommend using them if you have them!
- Sesame seeds
- Green onions

How do I eat ahi tuna?
The best way to eat ahi tuna is by searing it on the outside and leaving the inside raw. If you look up any seared ahi tuna recipe, or if you order seared ahi tuna at a restaurant, that is typically how it's served. If it makes you uncomfortable to eat raw fish, you can definitely cook it all the way through - but I promise, it's so much better raw on the inside!
As for the best way to serve it, I love topping the tuna steaks with some sesame seeds (even better if you toast them on a pan first!) and chopped green onion as garnish. I also love drizzling homemade lighter sriracha mayo on top. On the side, these seared ahi tuna steaks go great with fresh green beans and jasmine rice!
How do I cook the tuna steaks?
You'll be thrilled to hear how EASY it is to make them! Here's what you do:
- Pat the tuna steaks dry.
- Mix together the marinade ingredients, pour over the tuna steaks and marinate in the refrigerator for at least an hour, but preferably overnight.
- Heat a non-stick skillet on high for several minutes, until very hot.
- Add the olive oil to the pan and sear the tuna for 1-1.5 minutes on each side (this will give you a nice sear on the outside, but medium rare on the inside).
- Remove tuna steaks from the heat and let rest for 2-3 minutes.
- While the steaks are resting, make the light sriracha mayo.
- Slice tuna and drizzle with sriracha mayo. Garnish with green onions (optional) and sesame seeds (optional). Enjoy!

In the mood for seafood but don't have tuna steaks at home? Try my Cold Shrimp & Veggie Pasta Salad with Green Goddess Dressing!
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Seared Ahi Tuna Steaks with Sriracha Mayo
- Total Time: 7 minutes
- Yield: 2 servings 1x
Description
These Seared Ahi Tuna Steaks with Sriracha Mayo are delicious, healthy, low-calorie, low weight watchers points, and bursting with flavor. I LOVE seared ahi tuna - it takes just minutes to cook and this homemade marinade with sesame oil and soy sauce brings it to a whole new level.
Ingredients
- 2 tuna steaks (4-6 ounces each)
- 2 tbsp soy sauce
- 1 tbsp sesame oil
- 1 tsp garlic powder
- 1 tsp grated ginger (or I use tubed)
- ½ tsp salt
- ½ tsp pepper
- 2 tsp olive oil
- 4 tbsp light mayo
- 2 tsp sriracha
- green onion for garnish (optional)
- sesame seeds for garnish (optional)
Instructions
- Pat the tuna steaks dry.
- Mix together the soy sauce, sesame oil, garlic powder, ginger, salt and pepper. Pour over the tuna steaks and marinate in the refrigerator for at least an hour, but preferably overnight.
- Heat a non-stick skillet on high for several minutes, until very hot.
- Add the olive oil to the pan and sear the tuna for 1-1.5 minutes on each side (this will give you a nice sear on the outside, but medium rare on the inside).
- Remove tuna steaks from the heat and let rest for 2-3 minutes.
- While the steaks are resting, mix together light mayo and sriracha.
- Slice tuna and drizzle with sriracha mayo. Garnish with green onions (optional) and sesame seeds (optional).
- Prep Time: 2 minutes
- Cook Time: 5 minutes
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