Using a sharp knife, cut the dough into smaller rectangles.
Arrange 2 teaspoons of chopped chocolate across one of the short ends of the rectangle and fold that third of the dough over the chocolate, toward the center. Repeat the process on the opposite side of the dough, folding it over and tucking the end under to create a cylindrical shape.
Arrange each finished pain au chocolate on a lightly greased baking sheet with at least 1 1/2 inches between each pastry.
Cover them loosely with plastic wrap and allow them to rise for 45 minutes to 1 hour, until they are nearly doubled in size.
Preheat the oven to 400F.
Brush top with milk / cream
Bake the pain au chocolate for 15 to 20 minutes, until they are puffed and golden brown.
