Preheat: Set the oven to 160C (325F / Gas 3).
Season: Brush the steaks with a little oil and season all over with salt and pepper.
Sear: Place a heavy skillet or cast iron pan over high heat until smoking hot. Carefully add the steaks and sear all over until well coloured.
Oven: Transfer the steaks to a baking sheet and roast in the oven for 8 minutes for medium-rare.
Rest: Remove from the oven, cover loosely with foil and rest in a warm place for 10 minutes.
