Looking to add flair to ahi tuna? Try this Garlic Herb Sauce for tuna steaks! This incredible green drizzle is full of bright flavor. Fresh parsley, lemon, and capers make a punchy pairing with the savory fish. It adds a Mediterranean-style flair to this buttery, mild fish. Once you’ve cooked your tuna steak to perfection, this sauce is ideal for stepping it up a few notches. Here’s what to know!
Ingredients in this sauce for tuna steaks
It’s often that Asian-style flavors are paired with ahi tuna, but this fish is also ripe for Mediterranean-style flavors as well. This sauce for tuna steak is a butter sauce that’s bright and tangy, with loads of flavor from each of the ingredients. Here’s what you’ll need:
ButterCapersItalian flat-leaf parsleyLemon zestGarlicDijon mustardSalt
Tips for making the sauce
This sauce for tuna steaks comes together quickly: but there are a few things to note about ease of preparation. Here’s what to keep in mind when preparing this sauce (or jump to the recipe below to get started!):
The sauce makes enough for 4 modest portions or 2 large. A little goes a long way here! You’ll only need a few drizzles on each tuna steak. Prep the ingredients while the tuna steak comes to room temp. It’s best practice to leave ahi tuna steak at room temperature for about 20 minutes before cooking it. If you cook it straight from the fridge, the inside can be cold while the outside is fully cooked. Use this time to prep the ingredients for your sauce! Make the sauce right before serving. Because it’s a butter sauce, it’s best to make the sauce directly before serving the tuna steaks so that the butter is perfectly melted. We don’t recommend making the sauce in advance, because the color of the herbs dulls during storage.
How to buy and cook tuna steaks
Ahi tuna, aka yellowfin tuna or bigeye tuna, is a mild, lean fish commonly served as sushi, in poke bowls, or cooked rare or medium-rare. Wondering best practices for selecting and cooking tuna steaks? Head over to How to Cook Tuna Steak for a tutorial!
More tuna steak recipes
Love a great piece of ahi tuna? Here are a few more tuna steak recipes you can make with this delicious buttery fish:
Learn how to cook tuna steakFire up the grill for Grilled Tuna SteakMake Ahi Tuna Tacos with cilantro lime slawGo for a Poke Bowl or simple Ahi PokeTry Tuna Tartare
This sauce for tuna steak is…
Vegetarian and gluten-free. 5 from 2 reviews
3 tablespoons salted butter 2 tablespoons jarred capers, drained ¼ cup fresh Italian flat-leaf parsley, finely minced ½ teaspoon lemon zest 1 whole garlic clove, peeled and smashed ½ teaspoon Dijon mustard 1 pinch kosher salt
For the tuna steaks
4 steaks (1 pound) high quality ahi tuna (sashimi grade recommended; wild caught if you can find it*) 1 tablespoon neutral oil 1 ½ teaspoons kosher salt Fresh ground black pepper
