This may sound strange but I reckon it tastes great make a weight watchers jelly let it set then make a thick paste of protein powder one with no carbs & pour on top of Jelly.
The best protein powder I have found is a soya protein no carbs low fat its the Optimum Nutrition Soya Protein. Great to bake too, I can make muffins without using flour its great stuff. And best of all it doesn't upset your blood sugar levels.