You’ve eaten at a pricey restaurant and that medium-rare steak was too delicious to let go. So you took home a doggy bag. To reheat this for another meal without cooking it further place the steak in a metal pan, cover with lettuce and broil for 2 minutes. The moistness in the lettuce will keep your steak from overcooking and drying out. This works too if your meal is cooked and sat out before you’ve had time to serve it.