Firstly, squirt a baking tray with fry light then line with baking paper. I used a fairly long tray but use whatever you have!
Warm the oven to 180
Separate the yolk and the whites of the eggs - keep both - and whisk the whites in to a soft peak.
Next mix together the yolks, vanilla, cocoa powder and sweetener in another bowl, at this point it can get a little dry so add a little of the egg whites to loosen it up.
After this fold in the rest of the egg whites, pour in to a tray and pop in the oven.
I cooked mine for 15 minutes but depending on your tray you may need a few more minutes.
When nice and cool you can prepare your frosting.
Mix together the quark, sweetener and cocoa powder - it's super yummy!
Cut the brownies in to 25 add the frosting
