Bakery style cookies !!Triple Bites!!

bakery style cookies
ingredients
unsalted butter 1 cup
vanilla extract1 tsp
egg 1
dry ingredients
All purpose flour 1 cup
salt 1/4 tsp
vanilla custard powder 1 tbsp
sweetend milk powder 1 tbsp
baking powder 1 tsp
yellow food colour 1/8 tsp
icing sugar 1 cup
for chocolate batter
coca powder 1 tbsp
for chocolate cream
icing sugar 2 tbsp
coca 1 tbsp
water 1/2 tbsp