Combine the first five ingredients well in a large mixing bowl; press mixture into a 9 X 13 pan.
In a saucepan or double boiler over low heat, melt the last two ingredients together, stirring often.
Spread chocolate mixture over peanut butter mixture and set aside for an hour or two to set (if you can resist for that long!)
These squares are very rich and _very_ addictive! They were a frequent treat at home when I was growing up, and are one of my only childhood favourites I've been able to carry with me into veganhood. Yum!
Nutritional information: Appallingly high in fat and calories. Sorry about that!