Baking: 180 degrees, about 20 minutes (the temperature of the home oven varies, you need to adjust according to the actual situation)
Process:
1, all kinds of raw materials weighed, the butter is softened at room temperature.
2, the softened butter with a whisk until white, the volume becomes large, add sugar, beat evenly.
3. Add the egg mixture in three batches, beating well each time before adding the next.
4, add milk powder in turn, whisking well.
5. After whisking, it should be thick, smooth and creamy.
6, add the low gluten flour, gently stir until all the flour is moistened, do not over mix.
7: Take a small piece of batter, pinch it into a round shape, and then gently flatten it.
8: Pinch all the cookies and brush the surface with egg wash, then bake in the preheated oven (if you like the surface to be golden
glossy, brush with egg wash).