The Fat Cactus 215 Broadway, Lynnfield, MA01940 The Fat Cactus, situated on Rte. 1 North in Lynnfield, offers a variety of Mexican and American foods, from fajitas and…More quesadillas to burgers and salads. Opened in 2009, the restaurant features a well-stocked bar with more than 15 types of Margaritas available and nightly live entertainment on its outdoor porch. It also offers a private function room and several banquet menus for private parties of about 15 to 30 people. The restaurant turns into a lively bar scene at night, and has a special late-night bar menu, open until 12:30am on weekends.