Sauté milk powder with 2 tbsp ghee and 2 tbsp water in a pan on low flame until a thick mawa forms; stir in powdered sugar, crushed almonds, pistachios, and cardamom powder, then cool.
Knead all-purpose flour, 1 tbsp ghee, and water into a stiff dough; rest for 15 minutes.
Roll out thin dough discs, place a round ball of mawa filling in the center, and wrap completely.
Deep-fry the ghari in ghee over low flame until crisp and pale golden.
Coat the top with chilled thickened ghee and let set before serving.