1. Take a yellow Duncan Hines cake mix and a white cake mix coloured with pink food colour. Mix them separately according to the box instructions. 2. Fill cupcake liners halfway with one colour of the cake mix. 3. Fill a piping bag with the other colour and insert tip into the half-filled cupcake liner. 4. Keeping the tip in the centre of the cupcake, gently squeeze the piping bag until the cupcake liner is 2/3 full. 5. Bake according to box directions. 6. Cool. Cut in half and enjoy!