01 - Remove the steaks from the refrigerator 20 minutes before cooking to bring them to room temperature. Pat both sides thoroughly dry with paper towels to ensure proper searing.
02 - Generously season both sides of each steak with salt and freshly ground black pepper, pressing the seasoning gently into the surface.
03 - Heat the olive oil in a heavy skillet, preferably cast iron, over high heat until the oil just begins to shimmer and lightly smoke.
04 - Carefully place the steaks in the hot skillet and sear for 2 to 3 minutes per side until a deep golden-brown crust forms across the surface.
05 - Reduce the heat to medium. Add the unsalted butter, minced garlic, and rosemary sprigs to the pan, allowing the butter to melt and become foamy.
06 - Tilt the skillet slightly and use a large spoon to continuously baste the steaks with the fragrant garlic butter for 2 to 3 minutes, or until the desired doneness is reached. For medium-rare, aim for an internal temperature of 130°F (54°C).
07 - Transfer the steaks to a warm plate and let them rest for 5 minutes before slicing to allow the juices to redistribute evenly throughout the meat.