Preheat the oven to 450°F. Drizzle olive oil into a 9×13-inch baking dish and use your hand to evenly coat the entire surface. Set aside.
Combine the turkey, garlic, onion, ricotta, egg, breadcrumbs, basil, oregano and rosemary in a large bowl.
Shape into 30 meatballs approximately 1″ thick.
Roast for 15 minutes, or until the meatballs are firm and cooked through to 165°F.
Place in a pot with tomato sauce and cook for 10 minutes,
Season with cheese and salt and pepper to taste.
Serve with pasta or crusty bread.