Mix 80 g quark, fruit sugar, oil, milk, salt and vanilla pulp with the dough hooks of the hand mixer. Mix flour and baking powder, sieve onto the quark mixture and knead. Pour the dough into greased tartlet cups and bake in a preheated oven (electric range: 200 °C / gas: level 3) for approx. 20 minutes. Drain the apricots and cut into cubes, except for 2 columns for decoration.
Mix the remaining quark and mineral water. Fold in diced apricots and season to taste with sweetener. Remove the tartlets from the moulds and let them cool on a cake rack. Spread the apricot quark in the tartlets, decorate with the apricot wedges and serve with lemon balm if desired