The fabrication of a functional multilayer varistor (MLV) device at a record low temperature was demonstrated using the cold sintering co-fired ceramic (CSCC) technology. In this MLV device, a small volume fraction of polyetherimide (PEI) polymer is used to engineer ZnO grain boundaries, a base metal was used as internal electrodes. One of the key points in the process was the use of a Polypropylene carbonate (QPACTM-40) binder system to fabricate the ZnO/PEI tape. This binder system allowed a clean binder burnout procedure at low temperature under N2-H2 forming gas to avoid oxidation of the base metal electrode. The fabricated device highlighted a clean interface between the metal and ceramic/polymer composite, observed by STEM-EDS mapping. A nonlinear current-voltage response following the creation of double Schottky barrier was demonstrated in the structure-property relationship investigation. The concept presented in this study offers the possibility to fabricate multilayer devices for other types of applications at low temperatures