Cooked couscous are stuffed into these appetizer meatballs which have a Mediterranean flavor.
In a large bowl, combine all ingredients up to oil and form mixture into 1 1/2-inch meatballs. (Refrigerate up to one day.)
Heat oil in a cast-iron skillet over medium heat and cook meatballs, turning, until golden brown and cooked through, about 9 minutes. Garnish with cilantro and serve with harissa.
Prepare this dish a day ahead. Cook up quickly before serving.