Lightly spray slow cooker with cooking spray, or line with sprayed parchment paper.

Mix together the cake mix, milk, oil and eggs for the first layer and beat for two minutes. Pour into slow cooker.

Place lid on slow cooker and cook on low for about 3-5 hours; cooking time will vary depending on your slow cooker. Cake is ready when a toothpick placed on the center halfway down comes out clean.

When finished cooking, the top will become a layer of chocolate cake, and underneath will be a gooey, chocolate caramel sauce.

Spoon into individual bowls and serve warm with vanilla ice cream.