A method for manufacturing an onion rice cookie according to the present invention comprises the steps of washing a rice mixed with white rice rice and barley rice； A second step in which the mixed rice is called water； A third step of firstly pulverizing the rice mixed with water； A fourth step of secondarily pulverizing the primary pulverized mixed rice to produce a rice flour； A fifth step of grinding the onion into a blender and preparing it； A sixth step of mixing the rice flour and the ground onion to prepare a mixture； A seventh step of pulverizing the mixture； An eighth step of preparing the rice cake by cooking the pulverized mixture in a steamer； A ninth step of first cutting the rice cakes； A tenth step of primary drying the first cut rice cake； An eleventh step of second cutting the first dried rice cakes； A twelfth step of secondarily drying the secondly cut rice cake； And a thirteenth step of preparing the onyang rice cake by expanding the secondarily dried rice cake by putting it in a rice paddle machine. Also, in the method for producing onion rice cookies, the mixed rice is characterized in that 10 parts by weight of barley rice is mixed with 80 parts by weight of rice white rice. In addition, in the method of manufacturing an onion rice cookie, the mixture of the sixth step is prepared by mixing 10 parts by weight of onion ground with respect to 90 parts by weight of rice flour. In addition, in the method for producing onion rice cookies, the ground mixture is introduced into the steamer in the eighth step, and then steamed at 300 ° C for 20 minutes. In addition, in the method for manufacturing onion rice confectionery, the second-stage drying process of the twelfth step is such that the second-cut rice cake is put into a low temperature drier and dried at a temperature of 15 ° C for 20 to 24 hours, Is in the range of 28 to 32%. Also, in the onion rice cookie manufacturing method, the rice cake inflating process of the thirteenth step is characteri
