Cook the Steaks: Place a cast-iron skillet over high heat. Once the skillet is very hot, add the marinated steaks.
Sear: Sear the steaks for 5 to 8 minutes on one side, then flip them.
Rest: Remove the steaks from the skillet and let them rest for 5 minutes.
Finish: Top the rested steaks with butter.
Serve: Serve immediately with your favorite sides and garnish with freshly chopped parsley. Enjoy!