Seared Swordfish with Tomato, Caper and Olive Skillet

Two thick swordfish steaks hit a hot cast iron skillet and turn golden in minutes. Then cherry tomatoes, olives and capers join the pan, and butter melts over the fish into a glossy, savory sauce. It is a Mediterranean dinner that cooks in one pan, with bright lemon and fresh herbs to finish.

This skillet dinner puts swordfish at the center of a quick Mediterranean meal. The steaks are seasoned, seared until golden and then finished in a sauce built from halved cherry tomatoes, green and black olives and whole capers.

Butter and olive oil give the fish a rich, nutty crust while the tomatoes soften and reduce into a jammy base.

A squeeze of lemon brightens everything, and a scattering of fresh green herbs and optional grated hard cheese finishes the plate.

Everything cooks in one cast iron skillet, so cleanup stays simple. Serve it straight from the pan with lemon wedges for a dinner that feels special without much effort.

Ingredients

Why this recipe works

Searing the swordfish first builds a golden crust on the outside while the inside stays moist. Swordfish is dense and lean, so a hot pan with butter and oil gives it color and flavor quickly, before the delicate flesh has time to dry out.

Adding the tomatoes, olives and capers around the fish, then reducing them, concentrates their juices into a sauce that clings to the steaks.

The butter spooned over the fish carries the flavor of the pan into the sauce, and the final gentle turn with tongs finishes the steaks in that glossy base without breaking them apart.

Notes and substitutions

Choose swordfish steaks that are at least 1 inch thick. Thicker steaks sear well and stay juicy during the short simmer in the sauce. Ask the fishmonger for center-cut pieces with even thickness so they cook at the same pace.

A 12-inch cast iron skillet holds both steaks with room around them for the tomatoes and olives. Its heavy base keeps the heat steady for searing. A box grater is only needed if you use hard cheese, and a small bowl is handy for holding the tomatoes, olives and capers before they go into the pan.

• swordfish steaks: thick halibut or tuna steaks, cooked for the same short time until just flaky
• unsalted butter: extra olive oil, about 1 tbsp, for a dairy-free version
• hard cheese: omit it, or use finely grated Parmesan

Equipment

• 12-inch cast iron skillet
• Wooden cutting board
• Box grater
• Tongs
• Small bowl
• Citrus squeezer