When I was on SW I used to make a really scrummy dessert, I would mix Quark with a Mullerlight yogurt (any flavour), add the Quark and mix well until you reach the consistency you like, you can even add some fruit if you wish, soft fruits are good for this, if you need to sweeten, you could add a little Candarel. All these ingredients are FREE on both choices too!
I used to like my mix quite thick and often had a generous dollop on top of a low-fat digestive biscuit to make a mini-cheesecake!!