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Growing need for non-renewable energy, like petroleum, and its extraction challenges urge scientists to prioritize renewable resources for sustainable energy. Extensive research is addressing domestic LPG overconsumption and energy-saving. This study focuses on enhancing energy efficiency by adding fins to the bottom of specific cookware. To achieve this goal, a study involves the analysis of up to five stainless steel cookwares, each equipped with a unique fin setup designed to enhance thermal efficiency, raise temperatures more effectively, reduce gas consumption, optimize gas flow rates, and assess various dimensionless numbers. Results shows that among all the five cookwares, Cookware 3 (CW3) outperformed by showing the thermal efficiency of 61.5% to the gas flow rate at 15.27 mL s−1. This modified cookware showed an improved thermal efficiency (4.065% at gas flow rate of 15.27 mL s−1) when compared to the performance of a normal cookware with no fin arrangement present. In addition, the experimental data are validated using ANSYS Fluent software and MATLAB platform with Deep Neural Network-based Binary Bat algorithm (DNN-BBA). The results of the DNN-BBA technique showed a strong correlation with the actual results for temperature increase, thermal efficiency, gas consumption, Nusselt number, Prandtl number, and Rayleigh number. Additionally, the present study is able to maintain the burner's thermal efficiency at a higher level of 3%, compared to the previous study which achieved 2.5%. [ABSTRACT FROM AUTHOR]