Traditional cuisine has risen to the top of the consumer’s list of preferences. Many traditional cereal-based dishes have been processed, and instant mixes such as instant upma, idli, and dosa have been made. Comfort foods are foods that require little or no processing or cooking before consumption, making them more convenient for the user. Ready to Cook (RTC) and instant foods have grown highly popular as a result of increased urbanization and industrialization, owing to today’s lifestyle and the need for quick-to-serve cuisine.The study’s goal is to develop an RTC upma mix and evaluate its physicochemical, texture, sensory, and in vitro glycemic index. The millet was collected and pre-processing was done to develop the ready-to-cook mixes. The levels of millet incorporation ratio were 60% (V1), 70% (V2), and 80% (V3) levels. Standard procedures were used to determine the physicochemical, textural, sensory, and in vitro glycemic index. The nutritional composition of V3 was found to be high, with moisture, carbohydrate, protein, fat, fibre, soluble fibre, and insoluble fibre content of 6.4 percent, 73.6g, 8.5g, 6.2g, 6.6g, 2.4g, and 0.56g, respectively.The textural profile showed a significant difference (p<0.05) between variations in comparison with the standard. Results on sensory evaluation showed that 70% foxtail millet upma mix shows high acceptable than other. The mean in vitro glycemic index of the control upma mix was 68.7 ± 0.12, while the mean estimated glycemic index value of V1, V2, and V3 was50.5 ± 0.5, 49.8 ± 0.4, and 49.2± 0.6 respectively. Thus, the result evident that all the developed RTC upma mixes exhibited a low glycemic index and were useful for Diabetic subjects and easy to carry as a journey food.