Mix the butter with the sugar, add the egg, then incorporate the flour and chocolate chips until you obtain a soft dough. Shape it into a smooth log, wrap it, and chill for 1 hour. Then cut into thick slices, arrange them on a baking sheet, and bake for 12 to 14 minutes at 180°C (350°F). Let cool, melt the chocolate, and then spread a smooth layer over each cookie. Let set before serving.
What kind of chocolate would you use to prepare them?
