This Baked Tuna Steak features a winning combination of fresh tuna, delectable herbs, and bright citrus—the perfect seafood dinner!
My relationship with seafood has always been fraught, to say the least. It all began one weeknight evening in first grade—my mom prepared a dinner of fresh fish, to my youthful dismay. I sat at the dining room table in tears, refusing to take a single bite. You see, my pet fish “Fin” was in eyesight, and I was convinced he would never really love me if he saw me eating a fish. Now that I’m older, and Fin is no longer with us, I can appreciate a good seafood meal without resorting to tears. I have even developed a number of original fishy recipes. But this baked tuna steak recipe has to be my all-time favorite. With just a few ingredients, these tuna steaks come out looking restaurant-ready.
What I find most appealing about this dish is the perfect harmony between bright and natural flavors. Sesame oil contributes a subtle richness that is amplified by notes of thyme and fresh lemon juice. Capers burst on the flavor scene with their briny contrast, while black pepper and garlic powder enhance each bite without overpowering it. With a tender side of baked pak choi and a sprinkle of lemon slices and parsley, this dish is as vibrant as it is multifaceted.
If you, like me, have ever found yourself intimidated by a plate of fish—then I hope this recipe will usher in a happier era of your seafood journey. Prep your baked tuna in advance and enjoy it as an elevated workday lunch. Or serve this dish as part of an at-home getaway with that someone special. No matter how you choose to serve it, I can guarantee that this baked tuna steak is one you won’t want to miss.
Tuna, past and present
Anyone who has visited a modern-day grocery store knows that tuna is one of the most popular kinds of fish available today. But this ordinary fish has actually been a seafood of choice for centuries. In the Mediterranean region, chefs would traditionally preserve tuna through salting and curing the fish. In Japan, tuna has gradually become a cornerstone of sushi and sashimi dishes. Tuna’s rise to international popularity continued throughout the 20th century. As refrigeration and freezing technology advanced, it became possible to ship fresh tuna more widely. Today, tuna remains a versatile fish across international cuisines. It appears everywhere, from high-end restaurants to canned pantry must-haves. This fish is what a late-night infomercial might call “refined yet approachable,” making it a reliable choice for a broad range of occasions.
How do I store leftovers?
If you can’t get through this entire dish in one sitting, don’t worry! Another perk of this baked tuna steak recipe is just how easy it is to store. After your tuna steak has cooled completely, transfer your leftovers to an airtight container. You can refrigerate these leftovers for up to 2 days. I definitely don’t recommend freezing leftover tuna, because this can make the tuna dry out and lose its natural texture.
Serving suggestions
You can absolutely come up with your own original serving ideas for your baked tuna steak. But if you’re looking for some inspiration, I’ve got you covered. When I serve this dish, I like to pair it with a side of rice like this Baked Rice or this Avocado Rice. I also find that a fresh salad works beautifully with this dish. You could try serving it with this Winter Salad, Kale Salad, or even this Farro Salad.
Baked Tuna Steak
Ingredients
- 1/2 lemon juiced
- 2 tablespoons sesame oil
- 1 sprig of fresh thyme
- Pinch of salt and black pepper
- 1/2 teaspoon garlic powder
- 1 tuna fillet (16 ounces)
- 2 pak choi
- Lemon slices for garnish
- 1 teaspoon capers in brine
- 1 tablespoon chopped parsley
Instructions
- Preheat the oven to 450°F.
- In a bowl, combine the lemon juice, sesame oil, fresh thyme, salt, pepper, and garlic powder and mix well.
- Marinate the tuna filet in the mixture for at least 15 minutes in the fridge. Meanwhile, bring a pot of salted water to a boil. Slice the pak choi in halves and boil for 2 minutes.
- Place the marinated tuna and the pak choi on a sheet pan. Cover the tuna with lemon slices and bake for 5 minutes in the preheated oven. Flip the tuna and cook for another 5 minutes.
- Remove the sheet pan from the oven and garnish with the capers and chopped parsley. Enjoy!
how long can I marinade the tuna in the fridge before it would be too long?
It’s best to keep it to around 15–30 minutes—if you go much beyond an hour, the lemon juice can start breaking down the texture of the tuna.
This came out great. Thanks for sharing.
Happy to hear! Thanks for reading.