Fresh-Pressed Olive Oil Club

Grilled Tuna with Castelvetrano Olive Relish

Grilled Tuna with Castelvetrano Olive Relish

Feel free to substitute any meaty fish steaks or fillets for the tuna, such as swordfish, red snapper, branzino, salmon, or Chilean sea bass. If you have any leftover relish, serve it with bread or potatoes.


  • 4 tuna or swordfish steaks, each about 6 ounces
  • Extra virgin olive oil
  • Salt and freshly ground black pepper
  • 1 fennel bulb, trimmed, sliced into 1/4-inch wedges
  • 2 leeks, cleaned and cut into 1/2-inch rounds
  • 2 lemons, sliced into thin rounds, plus wedges for serving

For the relish:

  • 1/2 cup chopped flat-leaf parsley
  • 1/2 cup pitted, roughly chopped Castelvetrano olives
  • 1 large shallot, peeled and diced
  • 1/4 cup diced red bell pepper
  • 3 tablespoons white wine vinegar
  • 1/4 cup plus 2 tablespoons extra virgin olive oil


Step 1

Preheat the oven to 475°F and set a rack on the top third of the oven and another on the bottom. Once hot, add a rimmed sheet pan to the oven to preheat.

Step 2

Rub the fish steaks with olive oil all over and season generously with salt and pepper. Toss the fennel, leeks, and lemons with a glug of olive oil and a pinch of salt.

Step 3

Carefully remove the preheated sheet pan from the oven and place the fish steaks in the center of the sheet pan (they will sizzle), then scatter the fennel mixture around the fish and place the sheet pan on the bottom rack. Cook for about 10 to 15 minutes.

Step 4

While the steaks cook, combine the relish ingredients in a small bowl and set aside.

Step 5

Turn the oven to broil and put the fish on the top rack under the broiler. Some of the outer edges of the leeks, fennel, and lemons should get a little char. This should take about 5 minutes.

Step 6

Serve with the olive relish and extra lemon wedges.

Serves 2 — Recipe adapted from