Mix the quark with a dash of milk, the vanilla sugar and the sugar until creamy. Divide into 4 large dessert bowls as follows:
Start with a layer of quark, sprinkle 2 teaspoons of oat flakes over it, drizzle some honey on top, another layer of quark, etc., until the last layer is a quark layer.
Heat the wild berries in the microwave or in a saucepan. Put on the last layer of quark and serve immediately.