Whip the cream until it's soft and foamy.
Add ⅓ of the whipped cream to the condensed milk and incorporate using folding motions.
Add the rest of the whipped cream using folding motions. Add the vanilla and fold it in as well.
Optionally, add the chocolate and fold it in.
Use the paper to remove the cooled cookies from the pans. Leave the paper in one of the pans but flip the cookie inside so that the poked side is facing downward.
On top of this first layer, add the filling. On top of that, place the other cookie with the poked side facing upwards.
Freeze the pan for 8 hours or overnight,
Unmould the sandwich and cut in the side you prefer, I cut it in 8.
Optionally, submerge half the sandwich in magic hard shell chocolate sauce. Freeze again for 2 hours before eating.