After many trials… this is the recipe and methodology that I arrived at.
Ingredients :
20 yolks
8 whites
150g AP Flour
2tsp lapis powder*
450g butter, melted
350g sugar
3tsp vanilla essence
1 cup prunes (optional)
To Do :
1. Beat yolks and sugar till white.
2. Separately whisk egg whites.
3. Fold whites to yolk mixture.
4. Combine flour with lapis spices.
5. Add in flour mixture egg mixture bit by bit.
6. Stir in butter.
7. Add in vanilla.
8. Place parchment paper at bottom of baking tin.
9. Place one layer of cake batter. Broil HI for 6min.
10. Repeat process till batter is used up.
11. Bake at 300F for 15min.
* Lapis Spice components : Cinnamon, Cloves, Cardamon, Coriander, Mace, Nutmeg.
Jedidiah’s 
This looks really tough man! How long did it take u to bake this? I’ll KIV this recipe til I have reached some level of competency (which may take years to reach). ;-P