Usually, a typical custard in a French toast recipe calls for plain milk. A custard made with hot chocolate, however, is anything but basic. Why should milk get all the fun, anyway?
When you are making the hot chocolate, ditch the water and make it with milk. If possible, make it super chocolatey. This way, you’ll have a rich custard for your French toast creation. And if you’d like to take it up a notch, skip the powdered stuff and use real melted chocolate. You can even use red wine hot chocolate instead. Now we’re talking.