Take butter and icing sugar in a bowl and whisk till creamy. Add vanilla and 1 tblspn milk and mix well.

Now take milk in a bowl. Dip the biscuit in milk and arrange it in a parchment lined plate.

You can do as much length as you wish.

Now spread a layer of the buttercream.

Now arrange another layer of biscuit and repeat with the buttercream.

Now to the remaining buttercream, add in cocoa powder and mix well.

Spread this on the outside of the cake and sprinkle with chocolate sprinkles.

Put this in fridge for 2 hours.

Slice and serve.