Wash the squash, place it onto a baking tray with large piece of aluminum foil.
Use a sharp knife to make a few slits on the surface, around the squash.
Loosely wrap the kabocha with the aluminum foil.
Roast at 425°F/218°C for 35-40 minutes, or until a knife can be inserted easily.
Remove from oven and let cool.
Peel off the skin and remove the seeds.
Mash:
Place the squash into a large mixing bowl, add in Chinese 5-spice powder, ground cinnamon and maple syrup.
Mash the mixture with a fork until smooth. If you prefer a smoother texture, you can throw the mixture into a food processor and give it a few pulses until smooth.
Taste and adjust the seasoning to your liking.
Notes
If your kabocha squash is larger, you can adjust the recipe accordingly.