I love Quark in SW quiches, in place of cottage cheese. It gives a much creamier, smoother texture and, when mixed with 1 or 2 HEX mature grated cheeses in the quiche, tastes so much better. I also have it with Options chocolate sachets (Synned) stirred through to make a low Syn mousse. Also good with fried onion, garlic and mushrooms as a baked potato filling or a topping for pasta.
Hope this helps a little. I'm sure you'll get lots more suggestions soon!
Kathy