While the pumpkin is cooking, heat the remaining 1 tbsp oil in a large saucepan over medium heat. Dice and add the onion and cook gently for 5 minutes until softened.
1 large onion
Stir in the garlic and ginger, cooking for 1 more minute.
3 cloves garlic, 1 tbsp fresh ginger
Stir through the cumin, coriander, cinnamon, paprika, and chilli flakes. Cook for 30 seconds until fragrant.
1 tsp ground cumin, 1 tsp ground coriander, 1/2 tsp smoked paprika, 1/4 tsp chili flakes, 1 inch cinnamon stick, 2 cloves
Peel off the skin or scoop out the pumpkin to separate from the skin. Add the roasted pumpkin to the pan and stir to coat it in the spiced onion mixture.
Pour in the stock, and bring to the boil. Then reduce the heat and simmer gently for 10–15 minutes.
750 ml vegetable stock
Remove from the heat and use a stick blender to purée until smooth (or blend in batches).
Stir in the double cream and mix. Season to taste if required.
200 ml double cream