Gooey cheese, bubbling marinara, shells containing a savory blend of sausage and cheese…what could be better? This recipe is a frequent request in our house. It’s a fun one to prepare-I like to get my hands dirty- and it can be prepped a day ahead and tossed in the oven when you’re ready to serve it. I use my homemade marinara, but a jar of high-quality store-bought sauce will work in this recipe. I recommend Cucina Antica or Rao’s marinara.