In the days of surplus government peanut butter, our school cafeteria served the most delicious peanut butter cake squares that were topped with peanut butter icing. Through the years I've tried to re-create them, but nothing's ever been close. The cake was the consistency of a yellow or white sheet cake, not like a brownie or a chewy bar. The icing tasted like a butter cream with peanut butter added. Does anyone have a recipe that might be close?