Preheat your oven to 350°F (175°C) and grease a donut pan with non-stick cooking spray.
In a mixing bowl, whisk together the pumpkin puree, granulated sugar, brown sugar, vegetable oil, eggs, and vanilla extract until smooth and well combined.
In a separate bowl, sift together the flour, baking powder, baking soda, cinnamon, nutmeg, ginger, and salt.
Gradually fold the dry ingredients into the wet mixture until just combined. Do not overmix; a few lumps are okay.
Using a piping bag or a zip-top bag with the corner snipped off, fill each donut mold about 2/3 full with the batter.
Bake the donuts in the preheated oven for 12-15 minutes, or until a toothpick inserted in the center comes out clean.
While the donuts are baking, mix the granulated sugar and cinnamon for the coating in a shallow bowl.
Allow the donuts to cool for 5 minutes in the pan, then gently remove them and place them on a wire rack.
While still warm, dip each donut into the cinnamon sugar mixture, coating both sides generously.
Allow the coated donuts to cool completely on the wire rack before serving.
Notes
Serve the donuts arranged on a rustic wooden board, garnished with a few cinnamon sticks and mini pumpkins for a seasonal touch.