In a saucepan caramelize 200 g of sugar, rotate the pan so as to cover the walls of the vessel. Let cool. We clean the apples, we dig them in the middle. We place the apples in the bowl and in each one we put a walnut kernel, over the jam and finally a cube of butter.
Bake until the apples are soft. Then add the burnt sugar cream (beat 6 eggs with 4 tablespoons of sugar and 2 sachets of vanilla sugar, gradually add 1 liter of milk). Put the dish in the oven for 35-40 minutes on medium heat.
Prepare the top: separate the egg white from the yolk, beat the egg white with 6 tablespoons of sugar, then add the yolks, mix and finally 6 tablespoons of flour. After the cream is baked, add the top composition and leave it in the oven until it passes the toothpick test.
Let the bowl cool a bit and then put the bowl upside down on a plate. Refrigerate until the next day and then decorate as desired!