Slightly stale or day-old bread will work best here. I especially love it with challah or brioche, though I think leftover slices of this milk bread would work well, too. Here, I used Artisan Bread in Five’s no-knead challah, but made using the garlic, chives and smoked gouda filling here.
The amount of bread you need will vary depending on the size of your slices — I used a squat challah, so we made four slices, but you might just need two from a larger loaf.