Absolutely! I highly recommend making a second batch and freezing the leftovers for later. Be sure to let the French toast cool completely, then wrap the slices in either foil or plastic wrap. Place them into a freezer-safe bag and freeze for 1-3 months. Thaw overnight in the fridge the day before you want to serve them. Either bake your leftover French toast slices in the oven (350 degrees for 5-10 minutes) or reheat them on the griddle following the instructions below.