1. Preheat oven to 400 degrees. Cook ravioli according to package. While ravioli is cooking, in a large saucepan, heat the spaghetti sauce on medium heat. Pour garlic, onion, oregano and basil and stir. Warm spaghetti sauce.
2. Once raviolis are cooked, drain water and then pour ravioli into the spaghetti sauce. Stir everything all together and cook over medium heat for about 2-3 minutes just to warm.
3. Pour the ravioli and sauce mixture into an oven safe pan. Cover the ravioli with the mozzarella slices in a single layer.
4. Bake at 400 degrees for about 10-12 minutes. Once mozzarella is melty, then change the oven to broil just to brown the mozzarella. Watch carefully so it doesn’t burn.
5. Remove from oven and serve with Parmesan or garlic bread. Enjoy!