Purple kale or curly kale can be substituted for the Tuscan variety (also called lacinato); chop the sturdy leaves instead of tearing them. Spelt is a good alternative to farro, with a similar taste and texture. We prefer French feta, which is typically milder and creamier, to other varieties.
This recipe is one of our Better Basics: 10 New Takes on Family Favorites, see the others.
A no-cook tomato sauce is all about allowing the different ingredients to soak up one another's flavors. Let this one sit for at least an hour -- even three, if you've planned ahead. If your tomatoes are super ripe, skip the knife and tear them to pieces with your hands. (Whole-wheat noodles can sub in for the farro ones.)
Quinoa cooks up light and fluffy in minutes (it's done when the telltale curlicue wisp unfurls). Its subtle flavor comes through whether served hot, cold, or at room temperature. It can stand in for couscous in most recipes.