Heat iron skillet to medium heat. Add butter, garlic, and rosemary.

Place steak into the skillet. If you don't hear a sizzle then the pan isn't ready.

Cook for one minute each side flipping often. Turn down heat to medium low about a 4. Continue flipping and scooping the butter and rosemary over the steaks. Cook until browned on outside. The middle will be a medium light pink center.

Top with sea salt and cracked black pepper. Serve with asparagus or greek salad.