Cocoa Squares - The Hungarian Creamy Brownie Recip

The Hungarian Creamy Brownie Recipe - Cocoa Squares with creamy and foamy white layer and cocoa glaze...Yummy! Bake with us this sweety wonder!
Attention: very sweet! :)
Ingredients:
For the dough:
-300 g all-purpose flour
-30 g dark cocoa powder
-15 g baking powder
-150 g butter
-150 g sugar
-6 egg yolks
-2 tbsp apricot jam
For the foam:
-6 egg whites
-350 g sugar
For cocoa glaze:
-100 g butter
-30 g dark cocoa powder
-3 tbsp water