How to Make It
Step 1
Season the steaks on both sides with the pepper, lightly patting it on.
Step 2
Set a large cast-iron skillet over moderately high heat. Season the steaks with salt, add them to the skillet and cook until brown and crusty, about 4 minutes. Turn and cook for 4 minutes longer for medium-rare meat. Transfer the steaks to a platter. Pour off the fat from the skillet, add the wine and cook until reduced by half, about 30 seconds. Pour the sauce over the steaks.
Step 3
Wipe out the skillet and add the butter. Add the watercress and cook over high heat, tossing, until wilted, about 1 minute. Season with salt. Cut the steaks in half, transfer to plates and serve with the watercress.
