Wash the pumpkin thoroughly and cut it into bite-sized pieces.
Place the pumpkin pieces in a steamer and steam for 15 minutes.
Transfer the steamed pumpkin to an oven-safe dish.
Evenly spread mozzarella cheese over the pumpkin.
Bake in a preheated oven at 180°C (356°F) for 10 minutes.
When the cheese is melted and lightly browned, remove and serve.