Chop the onion and cook them for about 2 min. Add the pumpkin and cook for 2 minutes then add the vegetables stock to the top of the pumpkin and cook for 25 min.
When cooked blend everything and add the double cream. In a separate frying pan add the sausage previously skinned and add 4 ladle of pumpkin mix and cook for 5 minutes. Start building the lasagna. Put a spoon of white sauce, a layer of lasagna sheet, 2 ladle of pumpkins mix, a bit of mozzarella, 2 spoons of sausage mix, parmesan cheese and a couple of spoons of white sauce. Keep doing this in this order until you use all the ingredients.
On the final layer cover with pumpkin mix, mozzarella cheese, parmesan and white sauce. Cook for 25 minutes at 200 degrees.
