Wash the pumpkin thoroughly, remove the skin and seeds, then steam it.
Mash the pumpkin and let it cool.
Let the cream cheese come to room temperature until soft, then whip with sugar.
Add eggs one at a time, mixing after each addition.
Add the mashed pumpkin, heavy cream, and vanilla extract, and mix well.
Sift cake flour and add to the mixture, combine evenly.
Pour the batter into a pan lined with parchment paper.
Bake in a 180°C oven for 30-35 minutes.
Let it cool, then chill completely in the refrigerator.