Pre heat the oven to 200°C/ fan 180°C / gas 6 and line two baking trays with foil.
Start by preparing the butternut squash. Rinse well, then peel and chop into small cubes. Add the butternut, cumin and 1 tablespoon of oil to a large bowl. Mix the ingredients with your hands to ensure the butternut is well coated. Spread out onto the first baking tray.
Cut the onion into wedges, then use your hands to separate these into smaller segments. Spread onto the second tray and drizzle over a teaspoon of olive oil. Place both trays in the oven.
Meanwhile make a start on the quinoa by rinsing it well in cold water. Add to a saucepan and fill with 400mls of boiling water. Bring the water to a boil, then cover and reduce the heat to a simmer. Cook for 20 minutes, draining any excess water. Remove from the heat and allow to rest, still covered, for 10 minutes.
Remove the onions after 20 minutes, to ensure they don’t burn and then remove the tray with butternut after 30-35 minutes.
In a jug mix the lemon juice, 1 tablespoon of olive oil and season with a pinch of salt and pepper.
Add the butternut, onions, quinoa and olive oil dressing to a large serving bowl. Finish by adding the sumac and toasted flaked almonds and stir to combine. Top with the freshly chopped coriander.