Preheat the oven to 375 F. Line 1 or 2 baking sheets with parchment paper.
In a medium mixing bowl, whisk together the flour, salt, baking soda, corn starch, and pumpkin pie spice, set aside.
In a large mixing bowl, cream the butter for about 1 minute using a stand mixer or electric mixer.
Add the brown sugar, the cane sugar, and the vanilla extract and beat together for another 1-2 minutes. Next, add the pumpkin puree. Continue to beat until fully combined, making sure to scrape the edges of the bowl so that the wet ingredients are combined evenly.
Turn the on low, and gradually add the flour until it is completely incorporated. The batter will be thick.
Add in ¾ of a cup of the chocolate chips. Fold the chocolate chips into the batter using a spatula. Reserve a ¼ cup of the chocolate chips for the tops.
To make cookies, scoop 2 tablespoons of dough with a medium scoop. Put the dough balls on a baking sheet with a few inches between each one, because they will spread out while baking.
Bake the cookies in a hot oven for 9-10 minutes until they turn golden brown around the edges and the middle is cooked. Sprinkle some chocolate chips on top of each cookie and wait for them to cool down for 10 minutes on the pan. Then move them to a cooling rack to finish cooling.