4 Fry steaks
Once the onions are done, pat dry steaks with kitchen paper. Reheat the pan until very hot and add oil. Fry the steaks quickly for 1 minute per side. Season with salt and pepper. Let the steak rest on a plate or on a chopping board for 3 minutes before serving. Serve with the mash, caramelized onions and a smear of Dijon mustard.