French toast, s'mores and grilled cheese might sound like an odd combination, but this casserole will have the whole family demanding "s'more" within moments. The recipe below sandwiches marshmallow fluff, chocolate and mascarpone cheese between slices of rich brioche bread. A toasted marshmallow topping and graham cracker crumble ensures that the campfire flavors of childhood s'mores stay in tact.
This recipe is perfect for brunch, as much of the work can be done in advance. Prepare the recipe up to the custard portion, and while the casserole soaks, cover it with plastic wrap and stick it in the fridge for up to 12 hours. Then simply uncover, top, bake and enjoy!