Wash the chestnut pumpkin thoroughly and remove the skin and seeds.
Cut the chestnut pumpkin into appropriate sizes.
Place the chestnut pumpkin in a steamer and steam for 15 minutes.
Cool the cooked chestnut pumpkin and mash it into suitable pieces.
Combine chestnut pumpkin, yogurt, nuts, and a little salt and pepper in a bowl and mix well.
Serve with salad greens on a plate.