Try this Overnight French Toast recipe, or contribute your own.
Using sandwich bread instead of dense challah yields a soggy, disintegrating casserole that fails to hold the rich custard. Stale, thick-cut loaves are non-negotiable because dried crumb absorbs liquid like a sponge without dissolving into mush.
Leftovers can be refrigerated for up to three days and reheated in a 325-degree oven to restore the exterior crunch. Individual portions also freeze well when wrapped tightly in foil for up to one month.