Kit kat cheese cake

Ingredients for base
Digestive biscuit crushed 2 ½ cup
Butter 4 ounces
Vanilla essence 1 tsp
Kit kat chocolate 1 cup + ½ cup
Eggs 3 separated
Sugar 5 ounces
Gelatin 2 tbsp
Water ¼ cup
Cream cheese 200 gm
Curd cheese 200 gm
Fresh cream whipped 12 ounces + 4 ounces for decoration
Method for base
Crush biscuits mix with melted butter, spread in a 9 inch loose bottom pan, bake for 10 minutes on 180 degree C, remove and cool.
Method for filling
Make custard with egg yolk and half sugar by cooking together both and stirring continuously add in dissolved gelatin and keep aside, in another bowl beat both the cheese with vanilla essence, now fold in the egg mixture with gelatin and cheese mixture, beat cream stiff, beat egg white stiff with remaining sugar and fold altogether with chopped kit kat chocolate, pour mixture in the base, chill until firm, remove, decorate with kit kat and whipped cream.