Almost like my Italian grandma's recipe. I add the egg to the mix to help bind the ingredients so they don't fall out when you slice the roll. Also, I like adding spices - onion powder, garlic powder and fennel seeds if it lacks these seeds. I also add paprika. I reserve the drippings from the sausage and pour them over the roll rather than use egg. I think it gives a better taste. same cooking time, although ovens vary and wait til golden brown and ends bubble.