Wash the sweet pumpkin thoroughly, remove the seeds, and cut into 2–3 cm pieces.
Place the sweet pumpkin pieces in a steamer and steam for 15 minutes.
Remove the skin from the steamed pumpkin and mash it.
Chop the apple and cucumber finely.
Add boiled eggs, apple, and cucumber to the mashed pumpkin.
Season with mayonnaise, salt, and pepper, and mix well.
Serve the finished salad in a bowl.