Roasted in a hot oven, this is an excellent way to enjoy these vegetables. Feel free to experiment with different spice mixes as desired and know that this is delicious with just salt & pepper.
Preheat oven to 220°C/425°F. Add the cauliflower, carrots and garlic to a large mixing bowl. Pour over the olive oil, za'atar, cumin and chili flakes along with a generous pinch of salt and a few grinds of black pepper. Mix to combine and spread over a parchment-lined baking sheet.
Move to the oven and roast until tender and beginning to char, about 15-20 minutes. Serve immediately.