Preheat the oven to 350°F and line baking sheets with parchment paper.
Melt the butter in a medium stainless steel skillet over medium heat. Continue cooking, swirling the pan occasionally, until the butter becomes foamy, the crackling quiets, and golden-brown bits form on the bottom. Once it smells nutty and the bits are amber brown, remove from the heat and pour the butter, including the browned bits, into a mixing bowl.
Add the granulated sugar and brown sugar to the warm browned butter and stir until combined. Set aside and allow the mixture to cool to room temperature.
In a separate bowl, whisk together the flour, salt, baking soda, cinnamon, ginger, nutmeg, and cloves.
Add the egg yolk and vanilla to the cooled butter mixture and stir until combined. Add the pumpkin puree and mix until smooth.
Add the dry ingredients in three additions, mixing after each addition until a soft dough forms. Fold in the semisweet chocolate chips.
Cover the dough and refrigerate for 30 minutes, or until firm enough to scoop.
Scoop the dough into approximately 1½-tablespoon portions, roll into balls, and place them on the prepared baking sheets. Flatten each ball slightly with the palm of your hand.
Bake for 10–12 minutes, or until the edges are lightly browned and the cookies are set while the centers still look slightly soft.
Let the cookies cool completely before removing them from the baking sheets.