I have made this cake several times now, its really lovely. It needed cooking for slightly longer than recommended but i cooked it in a round cake tin so that may be why. I changed the pistachios for pecans as that was what I had. Its just as nice hot or cold (if there's any left over) We ate it with cream naughty but nice.
Although I haven't yet tried this, it sounds lovely and unusual. Above all, I so appreciate your posting a REAL cake recipe and not something out of a box! I've just spent about an hour looking at pistachio recipes, including many cakes, and everything else I've seen uses a cake mix.