Step 1

Sprinkle steaks on both sides with salt and pepper. Chill, uncovered, at least 1 hour, up to 8 hours.

Step 2

Remove steaks from refrigerator, and let stand at room temperature 30 minutes.

Step 3

Preheat oven to 450°F. Heat oil in 12-inch cast-iron skillet over medium-high. Carefully place steaks in hot oil, and sear 3 minutes on each side. Place skillet in preheated oven, and cook until desired degree of doneness, about 5 minutes for medium-rare.

Step 4

Remove from oven; tilt skillet towards you so drippings collect in bottom of skillet. Add butter, thyme, and garlic to drippings, and spoon mixture over steaks for 2 minutes.

Step 5

Place steaks on a wire rack set in a rimmed baking sheet, and let rest 5 minutes. Thinly slice steaks against the grain, and serve with a sprinkle of sea salt.