01 -
Preheat oven to 220°C/430°F (200°C fan). Line a tray with baking/parchment paper.
02 -
Peel, deseed, and cut pumpkin into 3cm (1.2") cubes. You should end up with about 1 kg to fill a tray.
03 -
Place pumpkin in a bowl. Add garlic, salt, pepper, and olive oil. Toss well using a rubber spatula. Spread on the tray and roast for 20 minutes. Turn pumpkin pieces, then roast for an additional 7 to 10 minutes until nicely colored but still firm.
04 -
Mix yogurt, garlic, lemon juice, olive oil, salt, and pepper. Set aside for at least 10 minutes to allow the flavors to develop.
05 -
Preheat a skillet over medium-high heat (no oil). Add pine nuts and cook, stirring regularly, until lightly browned and aromatic.
06 -
Pile roasted pumpkin on a plate. Drizzle with yogurt sauce and a little olive oil. Sprinkle with sumac, pine nuts, and coriander. Serve warm or at room temperature.