01 - Remove steaks from refrigerator 30 minutes before cooking. Pat dry thoroughly with paper towels.
02 - Season both sides generously with kosher salt and freshly ground black pepper.
03 - Heat cast iron skillet over high heat until very hot, approximately 3-5 minutes.
04 - Add olive oil to skillet, swirling to coat. Place steaks in pan and sear without moving for 2-3 minutes until deep brown crust forms.
05 - Flip steaks and add butter, crushed garlic, thyme, and rosemary to pan.
06 - Tilt skillet slightly and continuously baste steaks with melted garlic butter for 2-3 minutes, or until internal temperature reaches 125°F for medium-rare.
07 - Transfer steaks to plate, tent loosely with foil, and rest for 5 minutes.
08 - Slice against grain and serve, spooning extra garlic butter from pan over steaks. Sprinkle with flaky sea salt if desired.