Wash the sweet pumpkin thoroughly, remove the seeds, and cut into bite-sized pieces.
Place the pumpkin in a steamer and steam for about 15 minutes until cooked.
When the pumpkin cools, remove the skin and mash it in a bowl.
Chop boiled eggs, cucumber, and apple, then mix with the mashed pumpkin.
Add mayonnaise, salt, and pepper, and mix well.
Serve the salad in a bowl and top with desired toppings such as nuts.