Step 1

Preheat oven to 350 degrees F (175 degrees C). Lightly grease a 9x13-inch baking dish.

Step 2

Dump cake mix into the prepared baking dish.

Step 3

Dump dry pudding mix on top of the cake mix.

Step 4

Drizzle milk over everything and mix to combine. Sprinkle chocolate chips on top of mixture. Distribute butter evenly on top.

Step 5

Bake in the preheated oven until a toothpick inserted into the center comes out clean, 35 to 40 minutes.