Place a large skillet in the oven and preheat to 325°F.
Place the water in a large sauce pan fitted with a steamer over high heat.
When the water is boiling add the cauliflower.
Steam for 8 minutes.
Place the olive oil in the hot skillet and add the steamed cauliflower with the white part of the green onions.
Roast for about 7 minutes.
Toss well and add the harissa and salt.
Toss well and return the pan to the oven and roast for another 10 minutes. Toss once or twice while the cauliflower is roasting.
Serve.
