Preheat oven to 180 degrees Celsius.
Butter and flour 2 baking forms with removable edges at 22 cm.
In a bowl, beat the egg whites until frothy with soft tops. Gradually add the vanilla sugar and the sugar while still beating until glossy and you get stiff tops. Place in fridge until later.
In a bowl, mix the butter and the sugar. While stirring add the egg yellows.
In another bowl, mix together the flour and baking powder.
Add dry ingredients along with the milk in the butter mixture. Mix well.
Dived and Spread batter evenly in the 2 baking forms.
Spread the meringue over batter in each form.
Sprinkle the meringue with almond flakes.
Place in the middle of the oven, and bake the until the meringue is set, about 30 - 35minutes.
Take out the cakes and let cool down on a wire rack.
Remove cakes from the forms and let cool fully.
Beat the whip cream and the vanilla sugar, make sure not to make to hard,
Place one cake on a serving plate with the almond flake side up. If you have a cake ring, place it around the cake.
Spread half of whipped cream filling on the cake.
Peel and cut the oranges and place on the whip cream. Add the rest of the whip cream
Cut the second half of the cake in 8 or more slices and put them with thealmond flakes side on top of the cream. Carefully remove cake ring, if using one.
Sprinkle with icing sugar.
Place in the fridge until serving.