I made Chef Eric Ripert’s Pan Perdu recipe the other day (using challah), and it was outstanding! This is essentially French Toast, but instead of dipping slices of bread in a milk/egg batter, the milk and eggs and spooned on to each side of the bread one at a time. You then give a small sprinkling of sugar, and grill it in butter. The end result was a crisp, caramelized, buttery exterior which gave way to a warm, gooey interior. Did not even need syrup!