Mix flour, sugar, yeast, salt, milk, and eggs to make the dough.
Let the dough rise for the first proof.
Melt dark chocolate and butter together in a double boiler.
Divide the dough into appropriate portions and add the chocolate filling.
Shape the dough and let it proof a second time.
Bake in a preheated oven at 180℃ for 20 minutes.
Once cooled, drizzle extra chocolate on top.