Lightly beat the eggs and the milk in a dish. Season with salt and pepper.
Dip both bread slices in the mixture, making sure that the mixture is soaked up and that the bread has enough mixture on both sides of either slice.
Heat a frying pan over a medium heat. Add the butter and swirl it around the pan.
When the butter begins to foam or bubble, put the bread (which has soaked up the mixture) in the pan and fry on both sides (1-2 minutes on each side or until golden brown).
Transfer to a plate. Can be served with bacon, sausages, eggs or a fruit compote.