Combine the butter, sugar and brown sugar together in the bowl of your mixer. Cream them together on medium speed until light and fluffy, about 5 minutes.
Add in the milk and vanilla until combined.
Turn the speed down to low and carefully add in the flour mixture just until it’s combined.
Stir in the chocolate chips.
With a 1/4 cup scoop, scoop the dough into the top of each cupcake.