Make ahead: The cauliflower and garlic can be coated in the za’atar, salt, and oil ahead of time, and then roasted with the cheese closer to the last minute. Or you can roast everything ahead of time, refrigerate it, and rewarm the cauliflower in the oven closer to the last minute. The sauce can be made a couple days ahead of time and refrigerated until serving.
Find it online: https://cardamomandtea.com/600/zaatar-cauliflower/