How do you make a chocolate chip cookie where the chips remain gooey after baked and cooled?
Naturally, chocolate is solid at room temperature. The only reason that chocolate chips are ever gooey is because they have been warmed recently enough that the chocolate has not yet reached it's solid state.

You may want to consider making your own chocolate chips with a little bit more liquid than normal to get the soft texture.


  Some Easy Ways to Warm Them Include:
  
  
  Throw the cookies up on your car windshield for a while.
  Stick them in the oven for a minute (generally dries them out)
  Put them in the Microwave for ~10-15 sec