A novel nanocomposite, Cu/Cu₂O/CuO embedded in N-doped carbon aerogel was fabricated using egg albumin and first time used as enzyme-free amperometric electrochemical glucose sensor. Excitingly, egg white played a crucial role in the in-situ formation of highly porous, small size, well dispersed Cu/Cu₂O/CuO nanoparticles in N-doped carbon aerogel. The Cu/Cu₂O/CuO-NC modified electrode was employed for non-enzymatic glucose detection where it exhibited a detection limit of 0.40 M and an outstanding sensitivity of 7892 A cm⁻² mM⁻¹ which is superior to existing cu based modified electrodes. The high sensitivity was attributed to the synergy arising from the ternary compositions embedded in N-doped carbon interfacing with multiple Cu redox couples and high surface area. The Cu/Cu₂O/CuO-NC modified electrode also showed excellent selectivity in detecting glucose in the presence of interfering species, including chloride salts of Na⁺, K⁺, Ca²⁺, and anions of ascorbic acid (AA), dopamine (DA), and uric acid (UA). This simple and scalable carbonization technique will attract interest and enable in designing other high-performance metal/metal oxide embedded in N-doped carbon composites for commercial glucose sensing applications.