Preheat oven to 180°C.

Break the biscuits in a mixer jar and grind to a fine powder.

Add it in a bowl and add cocoa, baking powder and sugar.

Mix everything well.

Now add milk to form a thick batter.

Pour into a lined, greased 7" square tin and level the batter.

Sprinkle choco chips on top and bake in the preheated oven for 25-30 minutes.

Remove from oven and check with a tooth pick to see whether it is done.

Flip the cake on wire rack and cool completely before slicing.

Serve the slices with a cup of coffee.