Preheat your oven to 350°F (175°C) and line baking sheets with parchment paper if desired.
In a large mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until the mixture is light and fluffy.
Add in the pumpkin puree and eggs, mixing until well combined.
In another bowl, whisk together the flour, baking powder, baking soda, cinnamon, nutmeg, salt, and ginger.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Be careful not to overmix.
In a small bowl, combine the granulated sugar and cinnamon for the coating.
Using a cookie scoop or tablespoon, scoop out dough balls and roll them in the cinnamon-sugar mixture.
Place the dough balls on the prepared baking sheets, leaving space between each cookie.
Bake for 10-12 minutes or until the edges are lightly golden. The cookies will appear soft but will firm up as they cool.
Allow the cookies to cool on the baking sheet for 5 minutes before transferring them to a cooling rack.
For added texture, consider stirring in chocolate chips or nuts, if desired.
Store cookies in an airtight container at room temperature for up to a week.