I used to call this peanut butter fudge, but after seeing a log of real peanut butter fudge at a touristy candy place, I decided that what I made was really ganache. It is mostly chocolate, after all.
The first time I made this I’d stumbled on the recipe – and I suppose even now I stumble through it still. This begins with a nice, smooth ganache, into which I stir salty, creamy peanut butter. Spoon the whole mess into a plastic-lined pan and after a few hours in the fridge you have a sliceable hunk of peanutty chocolate.