Moussaka is most commonly thought of as the Greek potato or eggplant-based dish that is layered and baked with Béchamel sauce on top. In Turkey, however, moussaka is not a layered dish, but is prepared by sautéing eggplant and beef and topping it with tomatoes and/or peppers. In this recipe, you'll make a stew with ground beef, eggplant, tomatoes, potatoes and zucchini all in one pot, incorporating the flavors of moussaka.