Cut the sweet pumpkin in half and remove the seeds.
Place the sweet pumpkin in a steamer and steam for 15 minutes until cooked.
Scoop out the inside with a spoon, leaving the skin as a bowl.
Mash the scooped-out pumpkin flesh.
Finely chop the onion and bacon.
Melt butter in a pan and sauté the onion and bacon.
Mix the mashed pumpkin with the sautéed ingredients.
Add milk and salt, then mix well.
Fill the pumpkin skin bowl with the mixture.
Top with pizza cheese.
Bake at 200°C for 10 minutes in the oven.