Grease and preheat a donut maker. If you don't have a donut maker, grease a donut pan and preheat your oven to 180C.
In a large mixing bowl, beat together the oil, eggs, sugar, pumpkin puree, spices, salt, and baking powder until smooth.
Whisk in the flour until smooth.
Fill the wells of the doughnut maker or pan about ¾ full.
If you are making them in the donut maker bake until it shows ready. If baking them in the oven, bake for about 15 minutes on 180C or until a toothpick or cake tester inserted into the center comes out clean.
You can serve them as they are or dusted with a mix of powder sugar and cinnamon.