1. Cook popcorn according to directions in Kambrook Popcorn Maker, with the butter and vanilla in the butter holder on top of the popcorn maker.
  2. Place the icing sugar and food colouring into a small zip lock bag and seal. Shake the bag until the sugar is evenly coloured.
  3. In a large bowl, toss together the popcorn, butter, vanilla and sugar and serve immediately.