Fleishig Dumpling on Dairy Pan

The Talmud in chullin, establishes a principle of Nat Bar Nat, meaning pareve food cooked in fleishig or milchig pots/pans can be eating with the opposite (like eating fish cooked In meat pan with milk). Does this principle in the Gemara mean one can cook dumplings on milchig pan, as the casing is pareve and the pareve casing would be permissible to eat with fleishig due to nat bar nat? Is it different lechatchila or B’dieved