Utilizing active SiO2/TiO2 nanoparticles, examination of a stepped solar box cooker (SSBC) was enhanced. To improve thermal performance, they were coated on a bar plate in various ratios ranging from 5% to 25%. SiO2/TiO2 nanolayer-coated bar plate performance employed in the SSBC was contrasted with different doping nanoparticle percentages for their solar thermal properties. as employed at respective rates of 5%, 10%, 15%, 20%, and 25%, the SiO2/TiO2 nanolayers covered by the SSBC are able to improve performance by approximately 31.77%, 37.69%, 49.21%, 36.99%, and 34.66% as compared to that of the single nanolayers (SiO2, TiO2) of conventional cookers.