Roast the Veggies: Preheat oven to 425°F (220°C). Toss zucchini, broccoli, onion, and bell pepper in olive oil, paprika, cumin, salt, and pepper. Spread on a baking sheet and roast for 20–25 minutes, flipping once, until golden and slightly charred.
Prepare grains or additional toppings.
Make the Lemon-Tahini Drizzle: In a small bowl, whisk together tahini, lemon juice, garlic, maple syrup, and a pinch of salt. Slowly whisk in water until the sauce is pourable and creamy.
Assemble the Bowl: Add your base (quinoa, couscous, or greens), top with roasted veggies, drizzle generously with the tahini sauce, and sprinkle with toppings like herbs, seeds, or cheese.