Step1:Mix the butter, sugar powder, milk powder, egg and milk evenly. Mix the flour and baking powder and then add them. Knead them into dough.
Step2:Mince the prune and put it into the dough. Knead it evenly. Roll the dough into a 0.8cm thick crust. Press out the round biscuit with the mould.
Step3:Brush a layer of yolk liquid on the surface of the biscuit, preheat the oven, put it into the upper and lower tubes of the oven and bake for 20 minutes.
Cooking tips:High temperature milk powder, namely, special baking milk powder, has skills in making delicious dishes.