I think this is fantastic and will make it often! I used a tart, crisp apple and crunchy peanut butter. Only thing I added was a touch of marmite because I love it and add it to just about everything, but especially like it with peanut butter. I tried this entirely as an experiment and it's an instant favorite.
I have done the cheese and apple bit and I bet the peanut would be a delightful addition. This truly is very good.