Preheat oven to 350F. Grease a dounut pan and set aside.
In a large bowl combine 1/2 cup granulated sugar, pumpkin puree, egg and almond milk. Whisk until well combined.
Add the unbleached all-purpose flour, baking powder, pumpkin pie spice and fine sea salt. Using a rubber spatula fold the mixture together until the dry ingredients have been fully incorporated
Fill each individual donut mold roughly 2/3 of the way full (about 3 tbsps) with the donut mixture. Bake for 12 to 14 minutes until firm and lightly browned.
While the donuts are baking mix the remaining 1/2 cup granulated sugar and cinnamon together in a medium sized bowl.
Once the baking time as lapsed remove the donut pan from the oven and although the donuts to cool in the pan for 5 to 10 minutes. At this point the donuts should be cool enough to handle. Using a pastry brush coat both sides of each donut with a thin layer of melted butter and roll the donuts around in the cinnamon sugar mixture. Do this for one donut at a time. Once coated transfer to a cooling rack to cool completely.