Ingredients:

2 cups flour
1cup butter
1cup icing sugar
2 tbs corn flour
1 tsp Baking powder
Pinch of salt

Method:

1-Beat butter till fluffy..add remaining ingredients n knead well.
2-Mix 2 tbs Cocoa powder in half dough.
(Refrigerate 15 mins)
3-Flatten the simple n cocoa dough separately,place cocoa dough on simple one & start Rolling (folding) from one side.
Refrigerate rolled dough 20 minutes n then cut cookies.
Bake in preheated oven at 180 for 15-20 mins.

Credit: Kitchenism