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four seared tuna steaks on a plate, each topped with the bright Sicilian sauce of tomatoes, olives, capers, and herbs. Visible grill marks on the tuna

Tonno alla Siciliana (Sicilian-Style Tuna Steaks)

This Sicilian-style tuna is seared over high heat and served with a bright Mediterranean sauce made with tomatoes, olives, capers, lemon, and fresh herbs. It’s simple, bold, and full of traditional coastal flavors.
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Prep Time 5 minutes
Cook Time 15 minutes
Total Time 20 minutes
Servings: 4 people
Course: Main Course
Cuisine: Sicilian / Mediterranean / Italian
Calories: 350
Ingredients Method Notes

Ingredients
  

For the Tuna
  • 4 tuna steaks 5–6 oz each, about 1 inch thick
  • Extra virgin olive oil
  • Sea salt
  • Freshly ground black pepper
For the Sicilian Sauce
  • 1/4 cup extra virgin olive oil
  • 4 garlic cloves minced
  • 2 ripe tomatoes diced
  • 1/2 cup dry white wine
  • 1/4 cup green olives sliced
  • 2 tablespoons capers drained
  • Zest and juice of 1 lemon
  • Fresh herbs thyme, rosemary, parsley

Method
 

Prepare the Tuna
  1. Pat tuna steaks dry with a paper towel.
  2. Season both sides generously with sea salt and black pepper.
  3. Heat a grill pan or cast-iron skillet over high heat and drizzle with olive oil.
Sear the Tuna
  1. Add the tuna steaks to the hot pan.
  2. Cook for 2–3 minutes per side until a golden crust forms.
  3. The center should stay slightly pink or rare for the best texture.
  4. Remove from the heat and rest while you prepare the sauce.
Make the Sicilian Sauce
  1. In another pan, warm the olive oil over medium heat.
  2. Add the minced garlic and cook until fragrant (about 30 seconds).
  3. Add the diced tomatoes and cook until they soften.
  4. Pour in the white wine and let it reduce by half.
  5. Stir in the olives, capers, lemon zest, and lemon juice.
  6. Add fresh herbs and let the sauce simmer for a few minutes.
Serve
  1. Place each tuna steak on a plate.
  2. Spoon the warm Sicilian sauce over the tuna.
  3. Garnish with extra parsley if you like.
  4. Serve immediately.

Notes

  • Tuna cooks very fast. Overcooking will make it firm and dry, so pull it off the heat while the center is still slightly pink.
  • If you don’t have an outdoor grill, a cast-iron grill pan gives great results.
  • The sauce can be made ahead of time, but the tuna should always be cooked fresh to keep its soft texture.
  • Use the best olive oil you can — it makes a big difference in a dish this simple.