01 -
1/2 cup unsalted butter.
02 -
1/2 cup brown sugar.
03 -
1/4 cup granulated sugar.
04 -
1 teaspoon vanilla extract.
05 -
1 large egg.
06 -
1 cup all-purpose flour.
07 -
1/2 teaspoon baking soda.
08 -
1/2 cup cocoa powder.
09 -
1 tablespoon whole milk.
10 -
2/3 cup dark chocolate chunks.
11 -
Extra chocolate for topping.