Remove the base of the cauliflower, and cut up the rest into medium sized florets.
Place them into a sheet pan. Drizzle the oil over the florets, and mix to cover them. Make sure to spread out the florets so they aren't on top of each other. This lets them roast better (than just steam).
Salt to taste, then pop in the oven and cook for 50 minutes, making sure to flip the florets half way through so they don't burn.
Pomegranate Molasses
Put the tahini and molasses in a small bowl. Add 1 tbsp of water, and stir. It will seize up, this is normal.
Continue stirring and add the other tbsp, it will finally look like a sauce.
Notes
All cauliflower heads are different sizes. If the cauliflower is small, use two heads instead.If needed, add more cooking oil as necessary. If you like the cauliflower crispier and don't mind the oil, then add more as well.