Preheat your oven to 375°F (190°C). Lightly grease your baking dish with olive oil to prevent sticking and add a subtle richness to your dish.
In a mixing bowl, gently toss the 9 ounces of cheese ravioli with 2 cups of marinara sauce, 1 teaspoon garlic powder, 1 teaspoon Italian seasoning, and salt and pepper to taste. Make sure every ravioli is coated in the flavorful sauce.
Transfer the saucy ravioli into the prepared baking dish, spreading it out evenly. Sprinkle the top with 1 cup shredded mozzarella and 1/2 cup grated Parmesan cheese.
Place the dish in the oven and bake for 20-25 minutes, or until the cheese is melted, bubbly, and lightly golden on top.
Remove from the oven and let it cool slightly. Garnish with fresh basil leaves for a vibrant finish. Serve warm and enjoy!