Beat the oil, eggs, pumpkin, spices, salt, and baking powder together until smooth.
Add the flour and stir just until smooth.
Fill the donut pans ½ full, approximately ¼ cup each.
Bake in center of oven for 15 to 18 minutes or until a toothpick comes out clean.
Cool on a wire rack for 5 minutes before loosening the edge.
Tap donuts out gently and cool on rack.
If coating the donuts: Combine the sugar and cinnamon in a small bowl. Toss the donuts gently in a small bowl with the sugar and cinnamon in it before completely cool.
If glazing the donuts: Combine the powdered sugar, melted butter and flavoring in small bowl. Wait until completely cool before dipping and swirling the donuts into the glaze.