Wash the chestnut pumpkin thoroughly, peel it, and cut it into bite-sized pieces.
Place the chestnut pumpkin in a steamer and steam for about 20 minutes until cooked.
Transfer the cooked pumpkin to a bowl and let it cool.
Add Greek yogurt, nuts, and honey to the chilled pumpkin from the refrigerator and mix well.
Place the salad on a plate and garnish with nuts.