Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking dish.

In a large mixing bowl, combine the chocolate cake mix, melted butter, and evaporated milk until smooth.

Pour half of the batter into the prepared baking dish and spread it evenly.

Sprinkle chocolate chips over the first layer of batter and drizzle with caramel sauce.

Pour the remaining batter over the chocolate chips and caramel layer.

Bake for 35-40 minutes until a toothpick comes out mostly clean.

Cool in the pan for 10-15 minutes before serving.