01 - Preheat the oven to 425°F. Line a baking sheet with parchment paper.
02 - In a large bowl, toss the broccoli florets with olive oil, sea salt, and black pepper until evenly coated.
03 - Spread the broccoli in a single layer on the prepared baking sheet. Roast for 18–20 minutes, turning once halfway through, until the edges are browned and the florets are tender-crisp.
04 - While the broccoli roasts, whisk together the tahini, lemon juice, garlic, parsley, dill (if using), sea salt, and cumin in a medium bowl. Add cold water 1 tablespoon at a time, whisking until the sauce is smooth and pourable. Adjust seasoning to taste.
05 - Transfer the roasted broccoli to a serving platter. Drizzle generously with the lemon herb tahini sauce. Serve immediately, garnished with extra herbs if desired.