Addictive chocolate-hazelnut spread stars in our two-tone version of chocolate bark. Making bark is easy--just melt chocolate, spread it out, and add your favorite toppings. We added one important step, though: tempering the chocolate (carefully melting and cooling it to specific temperatures while adding large chunks of unmelted chocolate) so the bark stays shiny and snappy. The temperatures for dark chocolate and white chocolate are a bit different, so follow directions carefully for best results. For other flavor options, try Dark Chocolate Peppermint Bark or White Chocolate, Pistachio, and Apricot Bark.