This year, there was what some would call a restaurant transformation in downtown Millburn. It may seem that Casita Mexican‘s pink exterior and bright sign came up over night (which it did), but really what is turning into Millburn’s favorite Mexican restaurant was being unveiled one dish at a time. Owner and Chef Cassie Fishkin (no, Fishkin is not formally trained as a chef, but we’re going to refer to her as one because, well… look at these dishes!), also owner of Montclair’s The Spot, had been working on creating a restaurant using fresh ingredients (with everything made in house and from scratch) that truly reflected Mexican flavors and traditions for months (possibly years in her mind). So on a hot summer’s day in August 2017, when residents found the exterior painted in a bright shade of pink and a..