Wash the sweet pumpkin thoroughly, remove the skin and seeds, then cut it into bite-sized pieces.
Finely chop the onion and carrot.
Melt butter in a pan and sauté the onion and carrot.
Add the sweet pumpkin and stir-fry together.
Pour in the milk and bring to a boil.
Once the ingredients are soft, blend them smoothly with a hand blender.
Season with salt and pepper.
Add cheese and gently melt over low heat.