PURPOSE: A producing method of walnut cake is provided to improve the eating texture of the walnut cake by adding scorched rice powder instead of rice powder, and to offer unique flavor to the walnut cake. CONSTITUTION: A producing method of walnut cake comprises a step of inserting dough for the walnut cake into a mold with red bean paste and crushed walnut, and heating the mold for the predetermined time. A producing method of an outer cover for the walnut cake comprises the following steps: mixing lotus roots, Lentinus edodes, Ganoderma lucidum, ginger, mugwort, Astragall radix, black garlic, Hovenia dulcis, schizandra, Lycium chinense, cinnamon, and Glycyrrhizae radix; inserting the ingredients into a boiling pot with water, and heating at 60-70 deg. C for 24-30 hours to obtain an extract; cooking rice using the extract as cooking liquid, and settling the cooked rice in the shade for cooling; inserting the cooled rice into a scorched rice producing device, and high-pressure compressing the rice at 150-170 deg. C; crushing the obtained scorched rice into 100-200 meshes; mixing the scorched rice powder with medium flour, sugar, eggs, margarine, baking powder, and other ingredients; and stirring the mixture for 30 minutes.본 발명은 누룽지 분말을 이용하여 호두과자용 반죽을 제조하는 방법 및 당해 방법에 따라 제조된 반죽을 사용하여 호두과자를 제조하는 방법에 관한 것이다.누룽지 분말은 약재로부터의 추출액을 밥물로 하여 밥을 지어내고, 이를 고온, 고압하에서 압착처리하여 누룽지를 제조한 다음, 소정의 메쉬 크기로 분쇄하여 수득한다. 이렇게 하여 수득한 누룽지 분말을 호두과자용 반죽의 소재로써 사용한다.