Spain on a Fork > All Recipes > Main Dishes > Spanish Tuna in Tomato Sauce | Atun en Tomate de Cádiz Recipe
All Recipes, Main Dishes / December 21, 2020

Spanish Tuna in Tomato Sauce | Atun en Tomate de Cádiz Recipe

Spain is known for having some of the best seafood dishes around, and this Spanish Tuna in Tomato Sauce is no exception. Loaded with flavors, super easy to make and comes together in just about 30 minutes.

This dish hails from the province of Cádiz in the region of Andalucia, where it´s known as Atun en Tomate. It´s basically fresh tuna that you cook in olive oil and serve with a homemade sauce. Another Spanish dish where simplicity meets extraordinary.

To make the tomato sauce, I used fresh tomatoes that I finely grated, but you can totally use canned tomato sauce instead. For the tuna, I used fresh tuna. If you can´t find fresh tuna in your area, you can use frozen. Just make sure to thaw it out before hand.

TIPS & TRICKS to Make this Recipe: The secret to this recipe is not overcook the tuna. Just brown it on all sides on a medium heat and then remove from the pan. Then you add it back to the pan with the tomato sauce and heat it through. If you overcook the tuna, it will get a tough texture and not absorb all the flavors from the tomato sauce.

Key Ingredients & Cookware I used in this Recipe:

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Watch the Video Below on How to Make Spanish Tuna in Tomato Sauce

Spanish Tuna in Tomato Sauce | Atun en Tomate de Cádiz Recipe

Course Main Course
Cuisine Spanish
Prep Time 10 minutes
Cook Time 20 minutes
Servings 2
Author Albert Bevia @ Spain on a Fork


  • 2 tbsp extra virgin olive oil 30 ml
  • 2 fresh tuna steaks 200 grams each (7 oz each)
  • 2 cloves garlic
  • 1/2 onion
  • 1/2 green bell pepper
  • 5 tomatoes
  • sea salt & black pepper
  • handful freshly chopped parsley


  1. Finely grate 4 to 5 ripe tomatoes, you want to end up with about 2 cups of grated tomato, roughly dice 1/2 green bell pepper, finely dice 1/2 onion, finely mince 2 cloves garlic, grab 2 fresh tuna steaks (about 1-inch | 2.54 cm thick), pat them dry with paper towels, season with sea salt & black pepper on both sides and cut into 1-inch (2.54 cm) pieces

  2. Heat a large fry pan with a medium heat and add in 2 tablespoons extra virgin olive oil, after 2 minutes add in the pieces of tuna, move the tuna around every 15 to 20 seconds to evenly brown all the sides, after about 2 minutes and all the sides have been browed, remove the tuna from the heat and set aside

  3. Using the same pan with the same heat, add in the diced green bell pepper, diced onion and minced garlic, mix with the olive oil, after about 5 minutes and all the ingredients have a light golden fried color, lower the fire to a low-medium heat, then add in the grated tomato and season with sea salt, black pepper and a little white sugar, mix together and simmer for about 10 minutes

  4. After 10 minutes and the grated tomato has thickened up, add the pieces of tuna back into the pan, gently mix them around so they are coated in the tomato sauce, after 2 minutes remove the pan from the heat, sprinkle with freshly chopped parsley, serve next to a crusty baguette, enjoy!

Recipe Notes

Get the Extra Virgin Olive Oil I used to make this recipe

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  1. Kevin

    This recipe is fantastic! I toasted a baguette and broke up the pieces to soak up the leftover sauce.

    03 . Feb . 2021
    • Spain on a Fork

      That sounds fantastic! much love 🙂

      03 . Feb . 2021

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