Preheat your oven to 350°F (175°C).
In a mixing bowl, combine the pumpkin purée, almond flour, baking powder, and ground ginger.
Stir the mixture until all the ingredients are well incorporated.
Pour the batter into a greased cake pan.
Bake in the preheated oven for about 25-30 minutes, or until a toothpick inserted in the center comes out clean.
Allow the cake to cool before serving.
