Pan-Seared Tuna Steak with Garlic, Lemon & Herbs
Perfectly seared on the outside and tender in the centre, this pan-seared tuna steak recipe is a simple way to turn fresh tuna into an impressive meal in just minutes.
A marinade of garlic, fresh lemon, olive oil and herbs complements the rich flavour of the tuna without overpowering it. Served with crisp vegetables, salad, roasted potatoes or rice, these seared tuna steaks make an excellent quick dinner when you want something fresh, flavourful and easy to prepare.
Careful preparation is particularly important with fresh fish. A sharp chef’s knife makes it easier to prepare herbs, garlic and vegetables cleanly while helping you achieve neat, precise slices when serving the tuna.
Ingredients
Serves 2
2 fresh tuna steaks, approximately 180–200g each
2 tbsp extra virgin olive oil
2 garlic cloves, finely minced
1 tbsp fresh lemon juice
1 tsp finely grated lemon zest
1 tsp fresh parsley, finely chopped
1 tsp fresh thyme leaves
½ tsp sea salt
¼ tsp freshly ground black pepper
1 tbsp olive oil for searing
Lemon wedges, to serve
Fresh parsley, to garnish
Optional Serving Suggestions
Serve the tuna with:
Roasted baby potatoes
Steamed or grilled vegetables
Fresh green salad
Basmati or jasmine rice
Grilled asparagus
Sautéed green beans
Tools You'll Need
Sharp chef’s knife
Cutting board
Small mixing bowl
Heavy frying pan or cast-iron skillet
Kitchen tongs
Fine grater or zester
A sharp chef’s knife is ideal for finely chopping the garlic and herbs, preparing your accompaniments and slicing the cooked tuna into clean, attractive pieces before serving.
Preparation & Cooking Time
Preparation: 10 minutes
Marinating: 15–20 minutes
Cooking: 4–6 minutes
Total: Approximately 30–35 minutes
Servings: 2
How to Make Pan-Seared Tuna Steak
1. Prepare the Marinade
In a small bowl, combine the extra virgin olive oil, minced garlic, lemon juice, lemon zest, parsley, thyme, sea salt and black pepper.
Mix thoroughly until the ingredients are evenly combined.
2. Marinate the Tuna
Pat the tuna steaks dry with kitchen paper and place them on a clean plate.
Brush the marinade over both sides of each steak, making sure the tuna is evenly coated.
Leave to marinate in the refrigerator for approximately 15–20 minutes.
Avoid marinating the tuna for too long, as the acidity of the lemon juice can begin to change the texture of the fish.
3. Heat the Pan
Remove the tuna from the refrigerator shortly before cooking.
Place a heavy frying pan or cast-iron skillet over medium-high to high heat. Add 1 tablespoon of olive oil and allow the pan to become properly hot.
A hot pan is essential for creating a beautifully seared exterior without unnecessarily overcooking the centre.
4. Sear the Tuna Steaks
Carefully place the tuna steaks into the hot pan.
For steaks approximately 2–3cm thick, sear for around 1½–2 minutes per side for a rare centre, or cook longer according to your preference.
Cooking time will vary depending on the thickness of the tuna steaks and desired doneness.
The outside should develop an appetising golden sear while the centre remains tender.
5. Rest and Slice
Transfer the tuna steaks to a clean cutting board and allow them to rest for approximately 2 minutes.
Using a sharp chef’s knife, slice the tuna across the grain into even slices.
A clean slicing motion helps preserve the texture of the fish and creates a more professional presentation.
6. Serve
Arrange the sliced tuna on plates and finish with fresh parsley, lemon wedges and your chosen side dishes.
Serve immediately while the tuna is warm and tender.
Chef's Tip
For the best seared tuna, start with a very hot pan and avoid moving the steaks unnecessarily while they cook.
If you want a rare or pink centre, choose tuna specifically suitable for being served less than fully cooked and follow appropriate food-safety guidance. If you're unsure, cook the tuna thoroughly.
Why Knife Choice Matters When Preparing Tuna
Fresh tuna has a delicate texture, and using a dull knife can crush or tear the flesh instead of producing clean slices.
A sharp Damascus steel chef’s knife allows you to slice through cooked tuna smoothly with minimal pressure, helping maintain the shape and texture of each piece.
The same knife can handle much of the preparation for this recipe, from finely mincing garlic and chopping fresh herbs to preparing vegetables and garnishes.
For home cooks who regularly prepare meat, fish, vegetables and fresh ingredients, a versatile chef’s knife is one of the most useful tools to keep in the kitchen.
Nutritional Information
Approximate values per serving, excluding side dishes:
Calories: 410 kcal
Protein: 48g
Fat: 23g
Saturated Fat: 4g
Carbohydrates: 3g
Sugars: 1g
Fibre: 0.5g
Sodium: 620mg
Nutritional values are estimates and may vary depending on the ingredients, portion sizes and tuna used.
What to Serve with Seared Tuna Steak
The rich flavour of tuna pairs particularly well with fresh, simple accompaniments. Try serving it with roasted potatoes and asparagus for a satisfying dinner, or choose a green salad and steamed vegetables for something lighter.
Rice also works beautifully, especially with a little lemon juice and fresh herbs added just before serving.
Whatever you choose, prepare vegetables with a sharp kitchen knife to achieve consistent cuts that cook evenly and give the finished plate a cleaner presentation.
Frequently Asked Questions
How long should you cook tuna steak?
Cooking time depends on the thickness of the steak and your preferred doneness. A 2–3cm tuna steak may need only around 1½–2 minutes per side for a rare centre, while additional cooking time will produce a more thoroughly cooked steak.
What seasoning goes well with tuna?
Tuna pairs well with garlic, lemon, parsley, thyme, black pepper, olive oil, sesame, soy, ginger and chilli. For this recipe, lemon and herbs keep the flavour fresh and allow the tuna to remain the star of the dish.
Should tuna steak be pink inside?
Tuna steak is often served pink or rare in the centre, but only tuna appropriate for this preparation should be eaten undercooked. When in doubt, cook the fish thoroughly.
What knife is best for slicing tuna steak?
A very sharp chef’s knife is an excellent all-purpose choice. Its long blade allows you to make smooth, controlled cuts rather than sawing through the delicate tuna.
Complete Your Kitchen Setup
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From preparing fresh herbs and vegetables to slicing beautifully seared tuna, a sharp, well-balanced kitchen knife can make food preparation faster, cleaner and more enjoyable.