Cut your cauliflower into small florets and then place on a parchment paper lined baking sheet.
Add the olive oil, cumin, sumac, salt and pepper and toss with your hands to evenly coat the cauliflower.
Roast the seasoned cauliflower until golden and fork tender.
Meanwhile, mix all of the sauce ingredients in a small bowl until it becomes a thick paste. Slowly add water to the mixture and whisk until it’s smooth.
Serve the sumac roasted cauliflower with the tahini sauce and garnish with parsley.
