Line a baking sheet with parchment paper.
In the bowl of a stand mixer fitted with the paddle attachment, add the butter, dark brown sugar, cane sugar, and vanilla extract. Mix on low until combined, then mix on speed 2 to 4 for 5 minutes or until lightened in color and fluffy.
Add the milk, flour, baking powder, baking soda, and fine sea salt in that order. Mix on low until combined. Add the chocolate chunks and mis to combine.
Using your hands, form the cookies into 12 balls and place them on the prepared baking sheet. Refrigerate for at least 1 hour or overnight.
Preheat the oven to 375°F. Line a second baking sheet with parchment paper. Transfer half of the cookies to the second baking sheet, spacing them 3 down and 2 across.
Bake for 12 to 15 minutes, or until golden brown on the bottoms.
Store in an airtight container for up to 7 days, or freeze for up to 1 month!