Add vegan butter, packed brown sugar, and granulated sugar to a large bowl. Using a handheld mixer or stand mixer, cream together on medium speed for 1–2 minutes, until just combined. Do not over-mix.
Add the plant-based milk and vanilla extract. Mix briefly to combine.
Add the all-purpose flour, baking soda, and salt. Fold together with a spatula until evenly combined. Do not over-stir.
Stir in the vegan chocolate chips until evenly distributed throughout the dough.
Cover the bowl tightly with plastic wrap and refrigerate for at least 30 minutes (up to overnight for best results).
When ready to bake, preheat oven to 350°F (175°C). Line a large baking sheet with parchment paper.
Scoop dough into balls approximately 1.5 inches wide. Roll gently between your palms and place on the prepared baking sheet, spacing 2 inches apart. Makes approximately 15 cookies.
Bake on the middle rack for 12 minutes. Remove from the oven while the centers still appear slightly underdone - this is correct and intentional.
Let cookies cool on the hot baking sheet for 5–10 minutes before transferring. They will firm up and de-puff as they cool, resulting in a soft chewy center with crispy edges.
Enjoy warm - best fresh from the oven!