We brought a pot of water to boil and added 1 lb of pasta, salt, and one chopped head of cauliflower.
Then we placed a glass bowl on top as a lid with 8oz of cheddar cheese, and a couple handful of parmesan. In the meantime we turned on the oven to "broil".
When the cheese started to melt, we added enough heavy cream to get it a bit runny.
Some parsley and pepper.
Then we drained the pasta and cauliflower, keeping some cooking water. We tossed it into a baking dish, mixed in the cheese, and added some cooking water. Then we stuffed the whole lot into the oven for a crusty top.