Purists may be appalled because I used grated haloumi but I can't tell you how happy it makes my spanakopita-loving heart. Its salty,chewy goodness adds a brilliant contrast to the soft filling and crisp pastry top. I also swapped the usual filo for puff pastry (a tip from a good friend) and there are no regrets here either. I urge you to try it and see how you feel.