Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper.
In a large mixing bowl, cream together the softened butter and brown sugar until fluffy. Add the pumpkin puree and maple syrup, combining well.
In a separate bowl, whisk together the flour, baking soda, cinnamon, and salt. Gradually add this mixture to the wet ingredients, stirring until just combined. Avoid overmixing!
Cover the bowl with the cookie dough and chill in the refrigerator for at least 30 minutes.
Using a spoon or cookie scoop, drop dollops of dough onto the prepared baking sheet, leaving sufficient space between each cookie.
Bake in the preheated oven for 10-12 minutes, or until the edges are lightly golden. Let cool on the baking sheet for 5 minutes before transferring to a wire rack.