I got a request for these from my friend and coworker, Kevin Winter.  (Yes, I take requests!)  

1 brownie recipe, prepared and baked as directed.  Let cool.

Cookie dough layer – 3/4 cup butter, 3/4 cup sugar, 3/4 cup brown sugar, 1 tsp vanilla, 1/4 tsp salt, 1 cup flour.

You can work with either softend or melted butter.  Add sugar and brown sugar.  Mix in vanilla and salt.  Add flour.  If you would like it a little thicker, add a tad more flour or a little powdered sugar.  Spread over cooled brownies.

Topping – 2 cups of chocolate chips (or milk or white chocolate).  Melt in a microwave proof bowl in 45 second intervals until you can stir it smooth.  Add 1 tbs oil.  Spread on top of cookie dough.  

I usually cut the brownies before the chocolate hardens.  I find it easier to cut them this way.