1. Prepare materials.
2. Soften the butter in advance, then add fine sugar and salt to leave the butter fluffy.
3. Add the whole egg mixture and stir evenly.
4. Mix the flour and milk powder and sift into the butter paste.
5. Stir into a moist batter.
6. Divide the batter into small portions with your hands, roll them into balls, and press a small hole on the ball with your fingers.
7. Squeeze strawberry jam.
8. Preheat the oven up and down to 160 degrees, put it in the middle of the oven, bake for 15 minutes, and the surface can be colored.
