This study aimed to develop a nutritious and functional protein bar using bael patra fruit powder, an underutilized but nutritionally rich ingredient, and to evaluate its sensory and nutritional qualities. bael patra, derived from the leaves of the Aegle marmelos tree, is known for its medicinal properties and high nutritional content. The protein bar was formulated using a blend of bael patra powder, soya flour, puffed lotus seeds (makhana), and coconut to enhance its nutritional profile and sustainability. The protein-enriched nutrient bar developed using bael patra powder offers a multitude of nutritional benefits. Bael patra powder is known for its high fiber content, which aids in digestion and helps maintain bowel regularity. Additionally, bael patra is rich in vitamins A, C, and E, which act as antioxidants, protecting the body from free radical damage and reducing the risk of chronic diseases. The inclusion of soya flour and puffed lotus seeds further enhances the protein content of the bar, making it an excellent source of plant-based protein. This combination of ingredients results in a nutrient-dense snack that not only satisfies hunger but also nourishes the body with essential nutrients. Secondly, the inclusion of protein-rich ingredients such as soya flour and puffed lotus seeds was intended to enhance the protein content of the bar, making it a valuable source of plant-based protein. This was particularly important considering the increasing demand for plant-based protein options among consumers looking for healthier and more sustainable food choices. Overall, the creation of the bael patra powder and protein-enriched nutrient bar was driven by the goal of developing a nutritious, sustainable, and functional food product that offers a range of health benefits to consumers.