Dark Whoopie Pie

Preheat oven to 180C (160C fan forced). Line 2 large flat baking trays with baking paper. Make cake mix according to packet directions reducing water by 2 tablespoons. Add enough black food colouring to make the batter darker, we used about 1 teaspoon.

Spoon 1 tablespoon measures of batter onto baking trays, leaving 6cm apart for spreading. Bake in the oven for 8 min or until tops are firm when touched. Cool on wire racks.

To assemble, combine vanilla frosting with burgundy food gel in a bowl until you reach your desired colour. Spread half of the flat sides of cakes with frosting then sandwich together with remaining cake halves. Dust with cocoa or icing sugar to serve.