1. Prepare the ingredients.
2. Mix the bean dregs, flour, and walnuts (after chopped).
3. Put oil sugar in.
4. Mix well.
5. Spread the plastic wrap and roll it into 3mm thin slices (I pressed it by hand in a hurry, uneven, thin and crispy on the sides, thick in the middle), and put on a baking tray.
6. Heat up and down at 190 degrees, about 30 minutes, move the pan in the middle to focus on the upper part.
7. It's baked.
8. Finished product
Tips:Adjust the temperature and time according to your own oven
