Line a baking try with parchment paper.

Melt the butter milk, white and dark chocolate in a microwavable bowl fro 1-2 minutes. Leave to cool to room temperature.

Whisk together the eggs and caster sugar until the colour has turned pale, is mousse like and is double the original volume of mixture. when whisked pour the cooled chocolate mix over the eggs and fold in together.

Once combined sift the cocoa powder and plain flour into the chocolate mixture and fold again. fold in the chocolate chips  and pour into the baking tin and bake for 24-28 minutes.

Once baked, leave to cool in the tin and then put them into the fridge overnight (for extra fudgy brownies)

Using a hot knife slice the brownies into 8 and decorate with the decorations, using melted chocolate to stick the decorations to the brownies.