01 - Preheat oven to 425°F. Line a baking sheet with parchment paper.
02 - Toss cauliflower florets with harissa paste, olive oil, smoked paprika, and sea salt in a large bowl until evenly coated.
03 - Spread seasoned cauliflower on prepared baking sheet in a single layer. Roast for 25–30 minutes, turning halfway, until golden and tender.
04 - Cook quinoa according to package instructions. Halve tomatoes, dice cucumber, shred cabbage, slice avocado, and chop herbs.
05 - Whisk tahini, lemon juice, garlic, cumin, and salt in a small bowl. Gradually add water until the sauce is creamy and pourable.
06 - Divide cooked quinoa among 4 bowls. Top each with roasted cauliflower, cherry tomatoes, cucumber, cabbage, avocado, and herbs.
07 - Drizzle generously with tahini sauce and sprinkle with pumpkin seeds. Serve immediately.