In a high sided skillet heat the olive oil and add the onion, garlic, and diced pumpkin. Cook until the onion and garlic are soft and the pumpkin is just starting to turn golden on the edges. Add the broth or water and cook the pumpkin and onions until they’re soft. Blend with a hand blender or put into a jug blender and blend until smooth and creamy. Whisk in the heavy cream and the parmesan until silky. Add water to get your perfect silky consistency.