The “fat sandwich” long associated with the food trucks at Rutgers University in New Brunswick weeks to be popping up elsewhere. Now, Belleville has its own spot. These sandwiches pack multiple ingredients into one sub roll. We’re not talking about meat and condiments. The “fat sandwich” combines a variety of fast foods, such as cheesesteak, french fries, mozzarella sticks, chicken fingers and any other unhealthy item you can imagine into one serving.