Preheat your oven to 375°F (190°C) and line a baking sheet with parchment paper.
In a large mixing bowl, whisk together the flour, ½ cup sugar, baking powder, baking soda, cinnamon, nutmeg, ginger, and salt.
In another bowl, combine the pumpkin puree, vegetable oil, and eggs. Mix well until fully combined.
Pour the wet ingredients into the dry ingredients and stir until just combined. Do not overmix.
Using a muffin scoop or small cookie scoop, drop rounded balls of dough onto the prepared baking sheet, spacing them about 2 inches apart.
Bake in the preheated oven for 18-20 minutes, or until the donut holes are lightly golden and a toothpick inserted into the center comes out clean.
While the donut holes are baking, mix together the ¼ cup sugar and 1 teaspoon cinnamon in a shallow bowl.
Once the donut holes are done, allow them to cool for a few minutes before rolling them in the cinnamon-sugar mixture while still warm.