To Prepare the Pancakes with Walnuts
Prepare the syrup and set it aside.
Combine the walnuts and sugar in a bowl. Stir in the mazaher; use the back of a spoon to mix and press the mazaher into the mixture until evenly blended and the nuts seem damp.
Holding a pancake in your hand, with the browned side against your hand, place 2 teaspoons walnut mixture in the center of the pancake. Gently fold the pancake over the filling and press the edges together, sealing the nut mixture inside the half-moon shape. Repeat with the remaining pancakes. Transfer to a serving platter and sprinkle ground pistachio over the top. Cover and store at room temperature until ready to serve.