Steps
1. In a saucepan, heat the vegetable broth and keep it warm on low heat.
2. In another pan, heat olive oil over medium heat. Add chopped onion and sauté until translucent.
3. Add minced garlic and diced tomato, cooking for another 2-3 minutes until tomatoes soften.
4. Stir in the Arborio rice, coating it with the oil and cooking for 1-2 minutes.
5. Begin adding the warm vegetable broth, one ladle at a time, stirring constantly until absorbed before adding more.
6. Continue this process until the rice is creamy and al dente, about 15-20 minutes.
7. Stir in grated Parmesan cheese, and season with salt and pepper to taste.
8. Serve hot, garnished with fresh basil leaves.