The invention discloses a buckwheat rice cake and a preparation method thereof. The buckwheat rice cake comprises the following raw materials in parts by weight: 30-50 parts of polished round-grained rice, 50-70 parts of glutinous rice, 5-10 parts of buckwheat, 5-15 parts of oat, 4-8 parts of chia seeds and 8-12 parts of white granulated
sugar. The preparation method comprises the following steps of: S1,
grinding the buckwheat into
powder; S2, squeezing oil from the chia seeds; S3, adding
yeast powder into chia seed residues for
fermentation; S4, soaking the polished round-grained rice, the glutinous rice and the oat; S5, dissolving the white granulated
sugar; and S6, uniformly mixing the whole buckwheat
powder, the chia seed powder, the polished round-grained rice, the glutinous rice and the oat, then adding
cellulase for enzymolysis, then adding chia seed oil and
sugar water for uniform mixing, and putting the mixture into an
extrusion curing
machine for
extrusion curing to obtain the buckwheat rice cake. The product disclosed by the invention contains rich
nutrient substances and has double effects of
nutrition and health care.