“Can you freeze leftover chicken and dumplings?” is a question we hear so often. The answer: yes. They will be better if you let them completely thaw out before reheating either in a saucepan on low heat or in a microwave oven. Microwaving  will change the texture of the dumpling somewhat because of the rapid heat expansion as it heats. If freezing, remember they will thaw faster in a shallow dish …rather than a deep bowl and if you plan to make more than one meal out of the leftovers, use small containers or zip lock bags.
Another option to reheating is to use a food saver bag and then you can drop the unopened bag into a pot of boiling water. Be sure you dumplings are completely warm and then open the bag carefully as steam will build up inside.