Preheat the oven to 350 degrees F and line two baking sheets with parchment paper or silicone mats.
In the bowl of a stand mixer with the paddle attachment, or using a handheld mixer, beat the softened vegan butter and brown sugar together until creamy, about 2 minutes.
Add the vanilla and non-dairy milk and mix to combine, scraping the sides as needed.
Stop the mixer and add the flour, then sprinkle the baking soda and salt on top of the flour.
Turn the mixer on low speed, and mix until just combined. Mix in the chocolate chips until incorporated.
Scoop about 1-2 tablespoons of dough using a cookie scoop or spoon, roll into balls and place on the prepared pans about 2 inches apart.
Bake for 9-12 minutes, until barely golden brown on the edges. They will appear soft, but will firm up as they cool. Sprinkle with a little coarse sea salt, if desired.
Let the cookies cool for 5 minutes on the pan, then transfer to a cooling rack to cool completely. Enjoy!