These edible bookmarks will make the night before an exam into a memory... even a pleasant one! Crunchy phyllo dough filled with chocolate, they'll be a great reward at the end of each chapter studied.
Preheat the oven to 180°. In a saucepan, melt a square of chocolate broken into pieces using a double boiler, and at the same time unroll the defrosted phyllo dough. Place the first sheet on a piece of baking parchment, brush with melted butter and turn it over, then decorate with a few spoonfuls of dripped melted chocolate, as if making a Pollock canvas.
Cover with a second sheet of phyllo dough, brush with melted butter and, using a pizza wheel, cut into in several rectangles of about 12x7cm (or the right size for the storage bags available).
Transfer to a baking sheet, cover with a sheet of baking parchment and a second baking sheet in order to flatten the "bookmarks" as much as possible. Bake at 180° for 4-5 minutes. Take out of the oven and let cool, then put each slice in a transparent food storage bag.