that neither peanut butter nor nutella are actually as smooth as chocolate, which will also work to your advantage. as will the relatively small amount of cocoa powder the above recipe calls for. i would recommend first off making sure you are using roasted peanuts. the same moisture rule applies to nut...
will be creating them. i've had a costa rican trinatario that had very low chocolate and fruit levels. being a trinatario you would think you could just roast it. unfortunately if you do, it turns very bitter. you have to keep it delicate and a low eor. the same went for a forastero from india. a high nut...