Sausage Parmesan Sub Sandwiches

4 Italian mild or hot sausages
4 crusty long sandwich rolls
1 cup pasta sauce
1/2 cup grated mozzarella cheese
1/4 cup shredded Parmesan cheese

Preheat the grill. Cook the sausages, turning every 5 minutes for even cooking. When cooked through, remove from heat.

On a baking sheet, open rolls and fill with sausages. Top with sauce, mozzarella and Parmesan. You can either place the baking sheet back on the grill over low heat or oven. Heat until cheese melts.