In a bowl pour in ur margerine and sugar mix until creamy

In another bowl sieve in ur flour and pinch of salt mix it and be pouring in to ur margerine gradually

Add in ur egg yolk and mold

Share it into two different bowls, add ur milk into one bowl until in coporate and add ur cocoa powder into the other half until in coporate.

Preheat the oven, and make different shapes of ur choice and put into the oven for baking for 10mins

When ur cookies is done bring it out and serve with coffee or tea.

Note. For the inner fill u can get a milk Nutella, melt it and bring two of ur cookies, pour it on one and cover wid the other half side and allow to cool.