Roll one piece of dough into a rectangle about 3/4 inch thick 15 inch long and 10 inch wide (approximately). Spread the chocolate filling on the dough in an even layer all the way to the edges.
Fold the dough in half on its longer side, then roll it again as thinly as possible. Some filling might start to come out of the dough, it is messy but fun:-)
Cut the dough into 10-14 equal triangles (about 2.5 inch wide). Roll each wedge up, starting from the wide end. Repeat with the rest of the dough.
Carefully transfer the rolled cookie to a parchment-lined baking sheet. Place rolls, pointed-side down, on 2 parchment-lined baking sheets, spaced at least 1 inch apart.
Repeat the process with the second half of the dough and chocolate filling.