Adding toasted whole-wheat breadcrumbs gives this dish a nice crunch that balances out the creaminess of the sauce. Rather than baking the shells with the crumbs on top (which can make them soggy), toast the breadcrumbs separately, and toss a handful over each serving right before you put it on the table.
Earthy textures make this salad as interesting
to look at as it is to eat. French lentils are firmer than many other varieties, so they won't get mushy or break apart as they simmer. Don't be turned off by the gnarled appearance of celery root. Once caramelized, the vegetable's citrusy, licoricelike flavor shines.