1. Butter at room temperature, add brown sugar and beat in 3 times, then add eggs and continue to beat
2. Put in milk powder and continue to beat
3. Add flour and mix well
4. Put the baking powder and mix well, put it in a fresh-keeping bag, and freeze it into the refrigerator! Put some cooking oil in the fresh-keeping bag and rub it in advance so that the batter will not stick all over
5. Rod into thick slices and cut into small pieces
6. Put the oven at 150 degrees for 20 minutes
7. It was good for the first time, full of caramel flavor! Very crispy after cooling
