Marcellino Ristorante gnocchi | Photo courtesy Knife & Fork Media Group   Arizona Restaurant Week is coming back! From May 21-30, the Arizona Restaurant Association’s premier event will present some of the best dining options the state has to offer. Participating restaurants, which range from established five-star restaurants to small, locally owned hidden gems, will offer three-course prix-fixe menus in addition to their regular offerings. Each tasting menu will be priced at $33 or $44...