Imagine taking the caramelized sugar goodness of a crème brûlée and somehow merging it with custardy French toast... that's what happens with this magical breakfast casserole. You prep it the night before, so morning-you gets all the credit with none of the work. The bottom layer caramelizes into this ridiculously good buttery, caramel sauce that soaks into the bread, while the top gets all golden and crispy. It's basically dessert masquerading as breakfast, and nobody's complaining.