For the chocolate Philadelphia croissants, mix the soft butter, Philadelphia and flour with the dough hook until a homogeneous mass. Wrap the mixture tightly in plastic wrap and refrigerate for at least two hours.
Divide the dough into quarters. Preheat oven to 150 °C convection oven. Mix sugar with cinnamon and chocolate and sprinkle a quarter of it on the countertop. Roll out the first part of the dough on it into a circle the size of a springform pan. Cut into 16 “cake pieces” with a knife and roll each one into croissants. Repeat the process until the dough is used up.
Place the chocolate Philadelphia croissants on the baking sheet with the rolled end down and bake for 10-12 minutes.