*Add blanched cauliflower or broccoli florets to the pasta and vegetable mixture.
*Serve this dish warm by heating the sauce, then add cubes of cooked tofu.
The pasta cooking water, which carries some of the pasta's starch, is used here to stretch the sauce. It's a traditional Italian technique for thinning or smoothing a sauce so that it coats the pasta evenly. And the water replaces what might otherwise be oil or other fat.