Add the grated carrots to a pressure cooker and cook for a few minutes. Add the heavy cream and mix well. Close the lid and cook for 3 whistles.

Once the pressure releases, open the lid and cook the carrots for a little longer until most of the liquid evaporates. Add the sugar and mix well. Cook until the mixture thickens and the sugar syrup is absorbed.

Stir occasionally to prevent the halwa from sticking to the bottom.