This easy overnight eggnog French toast casserole is a holiday breakfast miracle. Prep it in ten minutes, let it soak overnight, and wake up to a golden, custardy, and incredibly delicious breakfast that tastes like a warm hug.
For best results, use stale or day-old bread. Full-fat eggnog is non-negotiable for proper texture. Let casserole rest after baking to allow custard to set. If top browns too quickly, tent with foil. For dairy-free, use dairy-free eggnog and coconut cream. For gluten-free, use gluten-free brioche.
Keywords: overnight french toast casserole, eggnog french toast, holiday breakfast, christmas breakfast, easy breakfast casserole