Hannah Mars / BuzzFeed

INGREDIENTS:

1 Woolworths white chocolate mud cake

6 tsp vanilla buttercream

Food dye, in rainbow colours

1 x 375g pack of white chocolate melts

Baking tray

Baking paper

Sprinkles, to decorate

DIRECTIONS:

Peel the icing off your Woolies mud cake and slice into 6 even pieces.

Put each section of cake in a separate bowl and crumble finely. Add 1 tsp of vanilla buttercream to each bowl, and stir to combine. Tint each bowl of cake mixture a different rainbow colour.

Pinch off small pieces of each colour and roll into small rainbow balls. Next, place the balls in the freezer for 15 minutes to set. Whilst they're setting, melt white chocolate with a few drops of red food colouring in the microwave in 30-second bursts.

Line a baking tray with baking paper. Take the cake balls out of the freezer and dip into the white chocolate using a fork. Place on the baking paper, and top with sprinkles. Store in the fridge.