Remove the steak from the fridge 30-45 minutes before cooking; pat completely dry with paper towels.
Preheat the oven to 400°F (204°C).
Season both sides generously with salt and pepper.
Heat oil in an oven-safe skillet over high heat until shimmering.
Sear the steak 2-3 minutes per side, undisturbed, until a deep brown crust forms.
Add butter, garlic, and herbs to the pan; tilt the pan and spoon the melted butter over the steak for 1 minute.
Transfer the skillet to the oven and cook 6-8 minutes for medium-rare (internal temp 130-135°F).
Remove, tent loosely with foil, and rest for 5-10 minutes before slicing against the grain.