Preheat oven to 180˚C.
Place Dr. Oetker Nona Luxury Moist Cake Pandan, water and eggs in a mixing bowl. Mix at high speed for 3 minutes. Add in vegetable oil and mix at low speed for 1minute or until batter is light and fluffy.
Divide mixture into 2 portions. Add cocoa powder into 1 portion, stir well.
Spoon two tablespoons of the pandan mixture into the centre of the cake tin (20cm). Straight away spoon two tablespoons of the chocolate mixture on top. Continue doing this until all the mixture has been used – you will end up with lots of alternate rings of mixture in the tin.
Bake for 55 minutes. Turn the cake out onto a wire rack to cool before serving.