Be sure to cool it completely before diving in, as the gooey layer is the same temperature as the surface of the sun. In a ...

It is hard to believe that it is made with a yellow cake mix ... the prepared pan when you add the cake mix bottom layer.

Spread over the cake mix layer. Bake bars for 45 minutes, or until edges are golden brown and the center has set to a soft consistency. Cool completely before slicing into bars and serving.