Katharine Hepburn's Brownies

I am open to be corrected on this but so the story goes that Katharine Hepburn was asked to submit a recipe for a charity thingy and she submitted a recipe for brownies.  It quickly became the 'go-to' recipe for brownies at the time.  But due to my brownie 'curse' I haven't ever been able to make them work.  Below is the original (I believe).