01 - Preheat the oven to 425°F. Line a baking sheet with parchment paper.
02 - Toss the broccoli florets with olive oil, sea salt, and black pepper until evenly coated. Spread in a single layer on the prepared baking sheet.
03 - Roast for 18–20 minutes, turning once halfway through, until the edges are deeply browned and the stalks are tender.
04 - While the broccoli roasts, whisk together the tahini, minced garlic, lemon juice, water, olive oil, parsley, cilantro (if using), cumin, salt, and lemon zest in a bowl until smooth. Add extra water, 1 tsp at a time, until the sauce reaches a creamy, pourable consistency.
05 - Transfer the roasted broccoli to a serving platter and drizzle generously with the lemon herb tahini sauce.
06 - Finish with toasted sesame seeds, additional chopped herbs, and lemon wedges. Serve warm or at room temperature.