Preheat oven to 350 degrees. Cook and drain lasagna noodles. Divide bratwurst into 6 pieces. Split lengthwise and stuff with half slice of mozzarella cheese. Wrap each piece in a noodle. Place in a casserole dish and coer with spaghetti sauce. Cover with foil. Bake for 30 minutes. Serve with Parmesan Cheese.