Remove ribeye from the refrigerator 30–45 minutes before cooking.
Pat the steak completely dry.
Season generously with kosher salt and freshly cracked black pepper.
Heat a cast-iron skillet until very hot.
Add the steak and sear 3–6 minutes per side depending on doneness.
Add butter and herbs, then baste for 2–3 minutes by spooning melted butter over the steak.
Check internal temperature using a thermometer (125°F rare, 135°F medium-rare, 145°F medium, etc.).
Remove from the heat slightly below final target temp (carryover cooking adds 5–10°F).
Let the steak rest for 5–10 minutes before slicing and serving.