1) For the breading: In a small bowl, combine the bread crumbs and 25g Parmesan cheese. Set aside.
2) For the filling: In a large bowl, mix together 75g Parmesan, mozzarella cheese, 4 tbsp olive oil, basil, and garlic. Season with salt and pepper, to taste. Cut the steaks in half crosswise and place on a work surface. Spread the mixture evenly over the steaks. Roll up the steaks and secure with skewers.
3) In a medium pan, heat the remaining 4 tablespoons of oil over medium heat. Roll the steaks in the breadcrumb mixture until coated and add to the pan. Cook the steaks until brown on all sides, about 6 to 8 mins. Add the marinara sauce to the pan. Bring the sauce to a simmer and scrape up the brown bits that cling to the bottom of the pan with a wooden spoon. Simmer, turning occasionally, for 10 to 15 mins for medium-well.
4) Remove the skewers, place the steaks on a cutting board and slice thinly. Arrange the steak slices on plates and serve with the marinara sauce.