Brown the butter by melting it in a medium saucepan over medium heat for 5-7 minutes until golden brown.
Combine wet ingredients: whisk brown butter, pumpkin puree, granulated sugar, brown sugar, eggs, and vanilla until smooth.
Mix dry ingredients: combine flour, baking soda, and salt in a separate bowl, and add gradually to wet ingredients.
Fold in chocolate chips gently to avoid overworking the dough.
Chill the dough for at least 1 hour covered with plastic wrap.
Preheat oven to 350°F (175°C) and line baking sheets with parchment paper.
Scoop dough onto baking sheets, leaving 2 inches between each cookie, and bake for 12 minutes.
Let cookies cool on baking sheets for 5 minutes before transferring to a wire rack.
Notes
To ensure the best texture, use room temperature ingredients and avoid overmixing the dough. Store cookies in an airtight container to maintain freshness.