Wash the pumpkin thoroughly, remove the seeds, and cut into bite-sized pieces.
Steam the pumpkin in a steamer for 15 minutes.
Place the steamed pumpkin in an oven-safe dish and lightly mash with a fork.
Evenly sprinkle mozzarella cheese over the mashed pumpkin.
Bake in a preheated oven at 180°C (356°F) for 10 minutes until the cheese melts.