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All Recipes, Main Dishes / March 16, 2018

Seared Tuna Steaks with Mustard & Thyme

– Seared Tuna Steaks with Mustard & Thyme –

I´m a huge fan of fresh tuna and these Seared Tuna Steaks with Mustard & Thyme have quickly become one of my favorite ways to enjoy them. Tuna is such an amazing protein to work with, it has a meaty texture, amazing flavor and it´s super healthy, loaded with omega-3´s and low in fat. In this recipe of Seared Tuna Steaks with Mustard & Thyme I used a ton of dijon mustard to coat the tuna steaks, yet it did not over-power the tuna with a mustardy (is that even a word?) flavor, it was just right…actually it was perfection! and of course when you pair mustard with thyme you´re going get an incredible explosion of flavors. The best part of this recipe? it´s all done in under 15 minutes!!! 🙂

How to Perfectly Sear Tuna Steaks

The most common mistake people make when they sear or cook fresh tuna steaks is that they over-cook them, which gives the steaks a very tuff texture and unpleasant taste. In this recipe of Seared Tuna Steaks with Mustard & Thyme I will show you how to perfectly sear tuna steaks. The secret to perfectly searing tuna steaks depends on the thickness of your steak, I used steaks that where 1/2 inch thick and seared them for 2 1/2 minutes per side, If your tuna steaks are a bit thicker sear them for 3 minutes per side, however when it comes to fresh tuna, it´s better to under-cook your steaks than over-cook them, always keep that in mind when cooking fresh tuna. Watch the video below on how to make these Seared Tuna Steaks with Mustard & Thyme or print out the recipe card below. Happy eating!

Watch the Video Below on How to Make Seared Tuna Steaks with Mustard & Thyme

Seared Tuna Steaks with Mustard & Thyme

Prep Time 5 minutes
Cook Time 10 minutes
Total Time 15 minutes
Servings 2
Author Albert Bevia @ Spain on a Fork


  • -2 fresh tuna steaks
  • -1/4 cup dijon mustard
  • -1 tbsp dried thyme
  • -sea salt
  • -black pepper
  • -2 tbsp extra virgin Spanish olive oil
  • cherry tomatoes
  • lemon
  • fresh parsley


  1. Grab 2 fresh tuna steaks that are about 1/2 inch thick and season them with sea salt and freshly cracked black pepper on both sides, then spread about a 1/4 cup of dijon mustard all over the tuna steaks and evenly sprinkle 1 tablespoon of dried thyme on the tuna steaks
  2. Heat a non-stick frying pan with a medium-high heat and add 2 tablespoons of extra virgin Spanish olive oil, once the oil get´s hot add the tuna steaks into the pan, cook for 2 1/2 minutes per side, then transfer the seared tuna steaks into a serving dish
  3. Using the same pan with the same heat add 6 cherry tomatoes into the pan, season with sea salt and freshly cracked black pepper and cook for 2 minutes, then add the cooked tomatoes to the dish with the seared tuna steaks
  4. Garnish with freshly chopped parsley and a couple slices of lemon
  5. Salud!

Recipe Notes

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  1. Ben

    I’ve made this twice and it is becomming a popular request in our household.
    Even the children think it’s Delicious!

    02 . Jul . 2021
    • Spain on a Fork

      I am so happy to hear that! Much love 🙂

      02 . Jul . 2021
  2. Liz Morin

    This was outstanding! I was looking for something that wouldn’t “cost” me any weight watchers points to season my tuna and this got rave reviews from everyone at the table. Definitely do not cook more than 2 minutes per side, I would recommend frankly 90 seconds to have a nice, cool rare center. The cooked tomatoes were a lovely addition. I served with a side salad and roasted asparagus.

    17 . Nov . 2019
    • Spain on a Fork

      Glad you enjoyed the dish Liz 🙂 truly appreciate your comment! much love

      17 . Nov . 2019
  3. Yuls

    Can you use spicy brown mustard to substitute Dijon mustard?

    01 . Apr . 2019
    • Spain on a Fork

      Absolutely, thanks for the comment 🙂 Much love

      02 . Apr . 2019
  4. Christina

    Oh man, I’m craving tuna steak after reading your post. They look divine!

    08 . Jun . 2018
    • Spain on a Fork

      Thank you for your comment 🙂 much love

      09 . Jun . 2018

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