1. Cut tops of coconuts. Pour out the coconut water. Put aside.
2. Add sugar and salt if desired to the chopped pumpkin.
Mix well with the little of the coconut water.
3. Fill coconut shells with mixture.
4. Bake in an earth oven or a moderate oven (180 degree or 350 F) for about 1 hour.
5. Cool and serve with thick coconut cream, if desired.