Preheat oven to 200 C / 400F. Line a baking tray with baking paper.
Using a sharp knife, cut the pumpkin into half from the tip of the stem to the base.
Scoop out seeds and stringy bits.
Place cut side down on the baking tray.
Roast for 45-50 minutes or until soft and the flesh easily comes away from the skin.
Remove from oven and let it cool completely.
Peel off the skin.
Transfer to a food processor. Process to a smooth paste.
Use this purée in all recipes requiring pumpkin purée.
Store purée in the refrigerator for 1 week or freeze for 1 month.