Parboil the halved potatoes in salted water for 8 to 10 minutes until just fork-tender, then drain well.

Season the steaks generously with salt and pepper.

Heat a heavy skillet over high heat and sear the steaks for 3 to 4 minutes per side, then remove and let rest.

Add the butter, garlic, and herbs to the same pan, then add the parboiled potatoes.

Cook the potatoes for 6 to 8 minutes, tossing occasionally, until golden and coated in the garlic butter.

Slice the steak against the grain and serve alongside the potatoes, spooning any extra pan butter over the top.