Double down on the olive oil flavor in this dish by warming a generous amount with torn green olives to dress your pasta. While you can use just one kind of olive, like mild Castelvetrano, a variety will create depth of flavor. Adding chopped walnuts provides texture and a nice dose of protein to this vegan dish, while lemon zest and juice perk everything up. It would also be good with soft herbs like oregano, dill or basil, a salty cheese like feta or Parmesan, or shrimp that's been cooked with the pasta in the last few minutes of boiling