Tuna steak with capers sauce

5 from 2 votes

Tuna steak with capers sauce

A tasty tuna steak beautifully seared and served with a tangy, herby and lemony sauce.
Servings 4 servings
Prep Time 20 mins
Cook Time 15 mins
Total Time 35 mins


  • large skillet
  • mixing bowl
  • cutting board
  • knife


Ingredients for the tuna

  • 1.5 lb tuna steak
  • 2 tbsp avocado oil
  • 2 tbsp lemon juice freshly squeezed, about a half lemon
  • 1 tbsp capers drained
  • 1 tbsp butter
  • salt and pepper to taste

Ingredients for the capers sauce

  • 3/4 cup mayonnaise
  • 2 tbsp horseradish creamy
  • 2 tbsp lemon juice freshly squeezed from about half lemon
  • 2 garlic cloves
  • 2 tbsp capers drained
  • 3 tbsp parsley
  • salt and pepper to taste


Steps for the steak

  • Gather your ingredients.
    tuna steak and other raw ingredients on parchment paper.
  • Preheat a large skillet with the oil; pat dry the tuna and season with salt and pepper; add the steak to the hot pan and sear on both sides; depending on the size of the steak, sear between 5 to 7 minutes per side.
    1.5 lb tuna steak, 2 tbsp avocado oil, salt and pepper to taste
    seasoned tuna steak in the hot skillet
  • When the tuna is almost done cooking, add the lemon juice, capers and butter; swirl the pan around to allow for the ingredients to combine and for the butter to melt; spoon the sauce over the fish as it finishes up cooking.
    2 tbsp lemon juice, 1 tbsp capers, 1 tbsp butter
    seared steak with all the added ingredients
  • Remove from the pan and serve with the sauce.
    final dish served with the sauce and lemon slices and capers as garnish

Steps for the sauce

  • Gather your ingredients.
    Sauce ingredients on a white plate
  • In a mmixing bowl, spoon the mayo and horseradish; mix to combine.
    3/4 cup mayonnaise, 2 tbsp horseradish
    mayo and horseradish being mixed
  • Using a cutting board, chop the remaining ingredients, garlic, capers, parsley; add to the bowl and mix to combine; add salt and pepper to taste; be mindful that capers are salty.
    2 tbsp lemon juice, 1 tbsp capers, 2 garlic cloves, 3 tbsp parsley, salt and pepper to taste
    ingredients chopped
Calories: 606kcal
Cost: $$$
Course: Appetizer, Main Course, Side Dish
Cuisine: Italian
Keyword: lemon caper sauce, seaffood recipe, seafood dinner, seafood sauce, seared tuna steak, tuna recipe, tuna sauce, tuna steak


Calories: 606kcal | Carbohydrates: 3g | Protein: 41g | Fat: 47g | Saturated Fat: 8g | Polyunsaturated Fat: 22g | Monounsaturated Fat: 15g | Trans Fat: 1g | Cholesterol: 83mg | Sodium: 537mg | Potassium: 501mg | Fiber: 1g | Sugar: 2g | Vitamin A: 4009IU | Vitamin C: 12mg | Calcium: 36mg | Iron: 2mg

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