I'd propose steer clear of adding the milk. Butter should help toast the pastry. I haven’t tried out working with white chocolate but I do use a little bit tahini paste and it is correctly fine. Hope this aids xx Store any leftover pistachio bars in an airtight container in https://raymondkamak.thenerdsblog.com/41118373/the-best-side-of-dubai-knafeh-pistachio-chocolate-bar