Preheat oven to 350 degrees F. Grease a 9 by 13-inch pan.

Unwrap caramels and add to a medium size saucepan with 1/3 cup of the evaporated milk. Heat over medium-low heat until caramels are melted; stir frequently so that the caramels don't scorch.

While the caramels are melting prepare the cake mix. In a medium bowl combine the cake mix, melted butter, and 1/3 cup of the evaporated milk. Mix until well combined. Take one-half of the cake mixture and pat out into the prepared pan. Bake in the preheated oven for 6 minutes.

Remove from oven and pour the melted caramel sauce evenly over the baked cake mix. Sprinkle the chocolate chips over top of the caramel. (I like a lot of chocolate chips so I make sure that the cover the caramel). Take the remaining cake mix and dab over the top of the chocolate chips by taking small pieces of the batter and slightly flatten it with your fingers and place it on top of the chocolate chips.

Place the baking pan back into the oven and bake another 15 to 18 minutes. Cool completely on a cooling rack and cut into bars.