Remove the seeds and peel from the pumpkin, then cut it into small pieces.
Place the pumpkin pieces in a steamer and steam for 15 minutes.
Mash the steamed pumpkin until smooth.
Add eggs, almond flour, unsweetened soy milk, salt, and baking powder to the mashed pumpkin and mix well.
Pour the batter into a cake mold and bake in a preheated oven at 180°C for 25 minutes.
Let it cool before serving.