Divide the kunafa pastry in half and spread each half in a separate baking pan. Pour the oil evenly over the top and bake both pans in the oven until golden brown. Remove from the oven and drain the excess oil.

In a bowl, mix the powdered milk, powdered sugar, vanilla, and cream until well combined.

Spread the filling over one layer of kunafa, place the second layer on top, then pour the simple syrup over it and cut into pieces.

Serve the Othmaliyeh Kunafa on plates, garnish with pistachios, and enjoy.