Preheat oven to 180°C. Line your cake pan with greaseproof paper.
Place Dr. Oetker Nona Butter Cake and eggs in a mixing bowl. Mix at medium speed for 3 minutes.
Note: Add in one egg at a time during the mixing step
Add in butter and mix at low speed for 1 minute or until batter is smooth.
Pour in 2/3 chempedak flesh into the batter and stir well.
Transfer the batter into lined baking pan and spread the rest of chempedak flesh onto the top of batter.
Bake at 180˚C for 50-55 minutes.