01 - Preheat the oven to 350°F and line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together flour, baking soda, salt, cinnamon, nutmeg, cloves, and ginger.
03 - In a large bowl, whisk together melted butter, pumpkin puree, brown sugar, granulated sugar, egg yolk, and vanilla extract until smooth and well combined.
04 - Gradually add the dry ingredients to the wet ingredients, stirring just until incorporated.
05 - Fold in the chocolate chips until evenly distributed.
06 - Using a tablespoon or cookie scoop, drop rounded balls of dough onto prepared baking sheets, spacing them about 2 inches apart.
07 - Bake for 11-13 minutes, or until edges are set and centers look slightly underbaked.
08 - Allow cookies to cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.