Heat a skillet over medium heat and add the oil, then add the sausage and saute until brown. Add the marinara sauce, bell peppers, onion, salt and pepper and saute until the ingredients are incorporated and hot, about 5 minutes.
Put some of the sausage and bell pepper mixture on each sandwich roll, top with some more marinara sauce, add the mozzarella and bake until the cheese is browned, about 5 minutes. Serve immediately.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Recipe courtesy of Paul's Live From New York, Eureka, CA