In a medium bowl combine turkey, breadcrumbs, pecorino, egg, garlic, tomato paste, parsley and salt and gently mix to combine. Form into an oval loaf using your hands, slightly flattened at the top on a nonstick baking sheet. Bake uncovered 50 to 55 minutes, or until it's cooked in the center and the internal temperature of 160 °F with a thermometer. Remove from oven, top with marinara and cheese and bake 3 to 5 minutes until the sauce is hot and the cheese is melted.
Slice in 8 equal pieces. Serve with more warmed sauce on the side if desired.