1. Caramel: Melt the sugar over medium heat until golden. Pour into a mold and let cool.
2. Cake: Prepare the cake mix and pour over the caramel.
3. Flan: Blend all the ingredients and pour over the cake mixture.
4. Bain-marie: Cover with aluminum foil, place the mold in a tray with water and bake at 175°C for 1h 15m.
5. Unmold: Cool, refrigerate and turn onto a large plate.
