Let steak come to room temperature then season with salt and pepper.
Cook steak in a cast iron pan on high heat. Cook for about 4 minutes per side and make sure to put fat side down in the skillet for several minutes to render the fat on the side of the steak.
Remove steak from pan and reduce heat to medium.
Add shallots and cook in drippings until softened and translucent.
Add in wine and bring to a boil. Cook for 5-8 minutes or until the liquid has reduced by half and thickened.
Whisk in butter one tablespoon at a time or until sauce has a glossy velvety consistency. Serve over steak and enjoy!