Chop the shredded phyllo dough into small pieces. Toast it in a pan with ghee over medium heat until golden brown.
In a bowl, combine the toasted phyllo with pistachio spread and tahini, mixing well.
Finely chop the semi-sweet and milk chocolate bars.
Melt the chocolate using your preferred method (double boiler or microwave).
If you want the chocolate to have a nice snap, make sure to temper it properly.
Use white chocolate colored with yellow food coloring to create designs on the chocolate bar (optional), then pour the melted chocolate into a mold, ensuring it covers all sides and corners. Shake off any excess chocolate.
Place the mold in the freezer for 10 minutes to set the chocolate layer.
Add the pistachio filling to the mold, then cover with another layer of melted chocolate.
Let the entire chocolate bar solidify in the freezer for at least 1 hour. Once fully set, remove the chocolate bar from the mold.