Season your steak on both sides with salt and pepper, then heat olive oil in a fry pan and place fillet in it and cook for 3 minutes on eat side. Meanwhile toasting your roll. Rest your steak for 3 minutes and place cheese on top so it will melt. Let’s start assembling your roll. Brush both sides with mayo and take bottom side and layer leaves, cucumbers, onions and tomatoes then place fillet on top and place roll top on top.