01 -
Preheat the oven to 350°F (175°C) and grease a 9x13-inch baking pan.
02 -
In a large bowl, combine the vanilla cake mix, water, vegetable oil, and eggs, then mix until smooth.
03 -
Pour half of the batter into the prepared pan evenly.
04 -
In a separate bowl, mix the cream cheese, powdered sugar, and vanilla extract until smooth and creamy.
05 -
Pour the cream cheese mixture over the batter in the pan, spreading it evenly.
06 -
Spoon the remaining batter over the cream cheese layer, covering it as much as possible.
07 -
In another bowl, whisk together the cocoa powder and milk until combined, then drizzle this over the batter.
08 -
Sprinkle the chocolate chips on top of the batter.
09 -
Bake in the preheated oven for 40-45 minutes, or until a toothpick inserted in the center comes out clean.
10 -
Allow to cool completely before serving.