Authentic tagines, market-fresh and cheap!
Right near the taxi/bus stop in the center of Amizmiz, you'll find the town market, the place where locals go to do their shopping on a daily basis. The market specializes in what you'd expect: meat, grains, fruits, veggies, and all kinds of tasty edibles. Like most markets in Morocco, this one has a café where you can bring some of your recently-purchased goods and they'll cook it up for you and add drinks and bread for a most fee of 30 or 40 Dirham (3-4$).
You can experiment with buying the products yourself and gear towards classic combos like beef with prunes and dates or chicken with almonds and olives. Or, you can leave it to the expert cooks at the restaurant. Just indicate "beef," "chicken," "lamb," or "vegetables" and they'll do the rest, adding the right garnishes and spices that you yourself probably might miss.