A quick and easy breakfast casserole using store-bought cinnamon rolls soaked overnight in a creamy custard, baked to golden perfection with a gooey, cinnamon-spiced texture.
Use room temperature eggs and milk for a smooth custard. Cover casserole tightly while soaking overnight to prevent drying. If baking edges brown too fast, tent with foil. Overnight soak is best but 30 minutes at room temp works in a pinch. Customize with nutmeg, cardamom, berries, nuts, or chocolate chips. Gluten-free cinnamon rolls can be used for gluten-sensitive diets.
Keywords: overnight casserole, cinnamon roll casserole, french toast casserole, easy breakfast, brunch recipe, cinnamon rolls, make-ahead breakfast