Roasted Zucchini-Chickpea Dip with Za'atar

Adjust oven rack to middle position and preheat oven to 400°F. Toss squash and onion with 3 tablespoons olive oil and season generously with salt and pepper. Turn onto a rimmed baking sheet and roast, stirring once or twice, until vegetables are tender and browned, about 20 minutes.

Add chickpeas, garlic, tahini, and roasted vegetables to the bowl of a food processor. Season to taste with salt and pepper. Pulse until well-chopped. With machine running, stream in olive oil, lemon juice, and water, and blend until smooth.

Add more water if mixture is too thick. Taste, adding more oil, lemon, or seasoning as needed.

Scrape dip into a serving bowl, drizzle with 1 additional tablespoon olive oil and sprinkle with za'atar.

Serve with toasted flatbread, pita or crudités.