Open the toaster oven and remove the tray.
Place the steak on the tray. Put the tray back into the toaster oven and close the door.
Press "Defrost" on the toaster oven. If you don't have a defrost function, set the heat to 200 degrees Fahrenheit. Adjust the time to 15 minutes. Leave the steak in until it beeps.
Check the steak to be sure it's completely defrosted. If it isn't, flip it over, put it back in and repeat the process.