Method
Preheat oven to 180°C / 350°F / Gas Mark 4.
Beat the Quark in a bowl to make it smooth and creamy.
Add lemon rind and juice, egg yolks and 2 tbsp of the sweetener.
Share between 4 small heatproof dishes or ramekins.
Stand them on a baking sheet and bake for 10 minutes.
Meanwhile, whip egg whites in a grease-free bowl until they hold their shape.
Whisk in remaining sweetener.
Remove desserts from oven and pile meringue on top.
Return to oven to bake for 5 more minutes, until golden brown.
Serve chilled.
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