In a medium saucepan, salt 1 1/4 cups water and bring to a boil. Whisk in the couscous. Turn off the heat, cover and let stand for 5 minutes. Transfer the cooked couscous to a bowl and mix in the nuts, parsley and egg. Season with salt and pepper. With damp hands, form the couscous into 4 patties, about 1-inch thick (about the same thickness of your first thumb joint).
Heat the oil in a 12-inch nonstick pan over moderate heat until hot but not smoking. Carefully place the couscous cakes in the pan and cook until golden, turning once, about 5 minutes per side. Remove from the heat and serve.
BYOC: The thing I love about making cakes is I can really throw anything in there. Sticking with the Middle Eastern theme, dates would add a nice texture to these. Plus, you can break up leftovers in a pan for an alternative to fried rice. You can throw any herb in here - basil, thyme or oregano.