Cut the pumpkin into appropriate sizes and steam it.
Mash the pumpkin and let it cool.
Mix oatmeal, flour, baking powder, sugar, and salt.
Add eggs, milk, and olive oil, and mix well.
Add the mashed pumpkin to complete the batter.
Pour the batter into a pound cake mold.
Bake in a preheated oven at 180°C (356°F) for 30 to 40 minutes.