Preheat your oven to 350°F (175°C) and grease a mini muffin tin or donut hole pan.
In a large mixing bowl, combine the pumpkin puree, sugar, brown sugar, melted butter, eggs, and vanilla extract. Whisk until well blended.
In a separate bowl, sift together the flour, baking soda, baking powder, ground cinnamon, nutmeg, and salt. Gradually add the dry ingredients to the pumpkin mixture, mixing until just combined.
Fill each cavity of the muffin tin or donut hole pan about two-thirds full with the batter.
Bake in the preheated oven for 12-15 minutes, or until a toothpick inserted into the center comes out clean.
While the donut holes cool slightly, prepare the cinnamon-sugar coating by mixing the ¼ cup sugar and 2 teaspoons of cinnamon in a shallow bowl.
Once cool enough to handle but still warm, roll each donut hole in the cinnamon-sugar mixture until fully coated.
Presentation Tips: Serve warm in a basket lined with parchment paper or pile them on a decorative plate, and dust with an extra sprinkle of cinnamon sugar for an enticing look!