Preheat the oven to 350°F (175°C).
Lightly grease a donut pan with non-stick spray.
In a large bowl, combine the pumpkin purée, spice cake mix, eggs, and pumpkin pie spice.
Mix until the batter is smooth with no dry streaks.
Spoon or pipe the batter evenly into the donut cavities, filling each about ¾ full.
Bake for 14–16 minutes or until a toothpick inserted comes out clean.
Allow the donuts to cool in the pan for 5 minutes.
Transfer to a wire rack to cool completely.
Serve plain or decorate with your favorite glaze or cinnamon sugar.