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MOF and two-dimensional (2D) MXene can be potential candidates in the field of water splitting by overcoming the material and field limitations. Here, in this work, a facile approach has been adopted for a synergistic growth of MOF onto MXene sheets to design efficient electrocatalysts. A comparative structural, chemical and morphological analysis has been made between single metallic metal organic frameworks (Mn-MOF and Cu-MOF) and bimetallic frameworks (Cu/Mn-MOF) synthesized via hydrothermal route, as well as directly grown MOF over Nb₂CT_x MXene sheets (Mn-MOF@MXene, Cu-MOF@MXene and Cu/Mn-MOF@MXene). All the synthesized nanostructures were implemented as working electrodes to test catalytic performances for water splitting applications. The MOF/MXene nanostructures presented enhanced hydrogen evolution reactions (HER) and oxygen evolution reactions (OER) than plain MOFs and MXene. In-situ MOF growth over MXene prevented restacking of 2D sheets with uniform MOF distribution for aiding higher surface area, abundant active sites and conductivity. Electronic modifications due to the presence of two metals and synergy between MOF/MXene morphologies, Cu/Mn-MOF@MXene is proven to be highly stable outstanding bifunctional electrocatalyst. Its superior reaction kinetics, lowest Tafel slopes (HER = 120 mVdec⁻¹, OER = 109 mVdec⁻¹) and overpotentials (η_HER = 180 mV, η_OER = 270 mV) with a reduced full cell working voltage ΔV = 1.96 V to 1.65 V aid in validating its potential for practical fuel cell applications.