01 - Whisk together flour, cream of tartar, baking soda, salt, cinnamon, nutmeg, ginger, and cloves in a medium bowl until evenly combined.
02 - Beat softened unsalted butter, granulated sugar, and brown sugar in a large mixing bowl until light and fluffy.
03 - Add pumpkin puree, egg, and vanilla extract to the butter mixture; mix until fully blended.
04 - Gradually add dry ingredients to the wet mixture, mixing gently until a soft dough forms.
05 - Cover bowl tightly and refrigerate dough for at least 30 minutes for easier shaping.
06 - In a small bowl, mix granulated sugar and cinnamon for coating.
07 - Scoop dough using a medium cookie scoop (about 2 tablespoons each), roll into balls, then coat each with cinnamon-sugar mixture.
08 - Arrange coated dough balls on a parchment-lined baking tray, spaced several centimeters apart. Bake at 175°C (350°F) for 10–12 minutes or until edges are set and centers are slightly soft.
09 - Transfer cookies to a wire rack and let cool completely before serving.