Sift the whole wheat flour and baking powder together and mix.
Soften the butter at room temperature and mix it with the whole wheat flour.
Add sugar, salt, and egg, and mix well.
Add milk gradually as you knead the dough.
Shape the dough into bite-sized balls and place them on the pan.
Bake in a preheated oven at 180°C for 15 minutes.
Place on a cooling rack to cool.