Blend the canned peaches into a fine puree.
In a separate bowl, whip the cream until fluffy.
In a third bowl mix together the quark and milk, add in sugar and vanilla sugar.
Fold in the whipped cream.
Layer the bottom of the serving dessert glasses / cups with some muesli, cover with some quark and pour the peach puree on top.
Garnish with fresh mint or red berries.