Preheat oven to 450 F/ 230 C
Chop cauliflower and sprinkle with a bit of broth or oil. Spread out on a parchment lined cookie sheet. Bake for 20 minutes until slightly crisp.
Meanwhile, cook potato and onion by boiling until soft.
Once cauliflower, potato and onion are done, put them in a high speed blender with all other ingredients, except pasta, and blend until smooth.
Cook your favorite pasta according to package directions. Drain and rinse, then return to pot.
Pour sauce over pasta and mix over low heat until thick and gooey.
