1. Weigh the low-flour, brown sugar, oatmeal, black bean flour, egg, maltose, walnut and other ingredients and put them in the container
2. Mix well
3. Put it in a fresh-keeping bag, sort it into shape, and put it in the refrigerator to fix and shape
4. Take out and cut into thin slices
5. Preheat the oven, 165 degrees, about 15 minutes
6. Take it out, let it cool, and seal it for storage.
