Mr. Batali saved me a trip to the grocery. And he can save you too if you have a head of cauliflower, pasta and a handful of pantry/fridge staples. I'll tell you flat out I reduced the pasta by 25% and could have done with even less. I also added 3 pinches of pepper flakes (much less) and had a free hand with the cheese (atrophied piave in my case but perfect for grating.).
Btw the recipe uses the whole head of cauliflower, stems included. Leave an hour for slow cooking. It's worth it. Vegetarian! Can be gluten free. Click here for the recipe.