A favorite in southern France, pan bagnat (pan ban-YAH) means "bathed bread." The bread in this sandwich is meant to absorb some liquid from the filling, so it's fine to assemble it entirely ahead of time. Pair with potato salad, pasta salad, or baked chips.
Instead of cleaning out the fridge to put lunch together, toss pasta with quality tuna; its richness and flavor will carry the salad, which is embellished with simple flavorings. Pack a piece of torn baguette to round out the meal.
This recipe begins with uncooked grain, which needs an hour in the pot and a little time to cool. If you need to save time, hunt down some precooked whole-grain farro on your local grocery store's rice aisle.