What to do with left-over steak

Last night's steak became tonight's dinner. Thinly sliced the steak--sauteed onion slices in olive oil until soft, put steak in, let sizzle for minute, removed from pan. Put in roasted potatoes from last night to soak up liquid and re-heat. put in two slices of bread, toasted in pan, placed steak and onions back on top of bread while in pan--sprinkled shredded Mozzarella over steak, turned heat off and covered. Set the table, removed cover, cheese melted, served. Perfect--and I deglazed the pan with bourbon for a little extra sauce.