Boil the pieces of pumpkin for about 10 minutes, then drain and let them dry, then blend (you can also cook the pumpkin in the oven, if you prefer). After that, beat the eggs in a bowl with honey; when they are light and fluffy, add the melted butter or the oil. Mix and add the flours and the baking powder. Mix everything well and add the pumpkin puree; lastly, always stirring, add a pinch of salt. Pour the mixture into a 26 cm diameter cake mold and bake in a preheated oven for 50 minutes at 180 degrees. Remove the cake, let it cool and serve.