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 a proper sear.
02 - Season both sides of each steak generously with salt and freshly ground black pepper, pressing the seasonings gently into the meat.
03 - Heat the olive oil in a heavy cast iron skillet over high heat until the oil begins to shimmer and lightly smoke.
04 - Carefully lay 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 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 aromatic garlic butter for 2 to 3 minutes, spooning the foaming butter over the top repeatedly until the desired doneness is reached. For medium-rare, aim for an internal temperature of 130°F.
07 - Transfer the steaks to a warm plate and let them rest for 5 minutes before slicing to allow the juices to redistribute throughout the meat.