Preheat the oven to 350°F. Grease an 8″ round cast-iron skillet (or another oven-proof pan of the same size).
In a large bowl or the bowl of a stand mixer fitted with the paddle attachment, beat the butter, sugar, and brown sugar until light and fluffy. Add the milk and vanilla and beat again until well combined. Add the flour, baking soda, and salt and mix until just combined.
Fold in the chocolate chips.
Spread the batter into the prepared skillet. Top with extra chocolate chips, as desired.
Bake for 20-30 minutes, until golden brown.
Enjoy with vegan ice cream and chocolate drizzle!
