This easy overnight breakfast casserole combines the flavors of gooey cinnamon rolls and tender French toast, soaked in a rich custard and finished with a creamy glaze. Prep ahead for a decadent, crowd-pleasing brunch with minimal morning effort.
Use day-old bread for best texture. Brioche and challah are ideal, but French bread works too. For gluten-free or dairy-free adaptations, substitute with sturdy gluten-free bread and plant-based milk/cream. Add fruit or nuts for seasonal variations. Let casserole rest after baking for easier slicing. Glaze can be made ahead and drizzled just before serving.
Keywords: cinnamon roll casserole, overnight french toast, breakfast casserole, brunch, easy breakfast, make ahead, cream cheese glaze, holiday breakfast