A rich, custardy overnight brioche casserole soaked in a smooth custard and topped with a boozy Calvados caramel sauce, perfect for an effortless yet indulgent breakfast or brunch.
If the top browns too quickly, tent loosely with foil halfway through baking. Let casserole rest after baking to set custard fully and make slicing easier. Use day-old brioche for best soaking results. Calvados caramel can be made up to 2 days ahead and gently reheated. For dairy-free version, substitute heavy cream and milk with coconut or almond milk and use vegan butter.
Keywords: brioche casserole, pain perdu, overnight casserole, Calvados caramel, French toast casserole, brunch recipe, easy breakfast, custard soaked bread