Caramel Boxes with Caramel–Macadamia Nut Mousse

Caramel, chocolate, and nuts — if you love this combination, and who doesn’t? — this is the dessert for you. Making the boxes and decorations may appear intimidating at first, but as you will find out, the caramel glass paste is actually quite easy to work with. Also, unfilled boxes can be stored for up to ten days in an airtight container, so you can start well ahead. To simplify, you can omit one of the caramel decorations (use either the corkscrews or the caramelized nuts instead of both