Cauliflower Cheese

This post brought to you by: nostalgia. I had a craving for Cauliflower Cheese (which I know sounds strange to some -- just think Mac and Cheese but with cauliflower instead). I made up this cheese sauce as I went along, and it worked pretty well. Unfortunately I didn't really keep track of the measurements, but I wanted to post my best guesses so that I'm prepared the next time nostalgia strikes.

Cauliflower (No) Cheese
1/2 head of cauliflower
1.5 T olive oil
enough flour to make a roux
3/4 c water
3/4 c soymilk
1 t dijon mustard
1/4 c nutritional yeast
1 T fake parmesan
2 t miso
salt
pepper
nutmeg

1. cut up the cauliflower and steam it
2. make the roux
3. add the water + soymilk, and the rest of the ingredients, and whisk until it thickens
4. cover the cauliflower with the cheese sauce; bake at 400F for 20 minutes
5. (optional) place under the grill (broiler) for a few minutes to brown the top