Preheat oven to 350*F. Line a baking sheet with parchment paper.
In a large bowl, combine melted vegan butter and brown sugar. Whisk until no clumps of brown sugar remain. Add pumpkin puree, non-dairy milk, and vanilla. Whisk once more to combine.
8 Tbsp Non-Dairy Butter, melted and cooled, 1 Cup Light Brown Sugar, tightly packed, ⅓ Cup Pumpkin Pureé, 1 Tbsp Non-Dairy Milk, 2 tsp Vanilla Extract
Add the flour, pumpkin pie spice, baking soda, and salt. Use a rubber spatula to fold the dry ingredients into the wet ingredients until mostly combined. Then, add chocolate chips and mix until they are distributed.
1 ½ Cups All-Purpose Flour, 2 ¾ tsp Pumpkin Pie Spice, ½ tsp Baking Soda, ¼ tsp Kosher Salt, ¾ Cup Vegan Semi-Sweet or Dark Chocolate Chips
Use a 3-tablespoon cookie scoop to scoop eight cookie dough balls onto a parchment-lined baking sheet. Be sure to evenly space them and leave at least 3 inches of space between each cookie dough ball. Top each cookie with a few extra chocolate chips if desired.
Bake the cookies in a 350*F oven for 12-14 minutes or until the edges are set but the middles are still soft. Allow the cookies to cool on a baking sheet for 5 minutes before transferring to a wire rack to cool completely.
Repeat with the remaining cookie dough.