Steps
1. In a saucepan, heat the vegetable broth and keep it warm on low heat.
2. In another pan, heat olive oil and butter over medium heat. Add the sliced onions and cook until caramelized, about 10-15 minutes.
3. Add the Arborio rice to the caramelized onions and stir for 1-2 minutes until the rice is slightly translucent.
4. Begin adding the warm vegetable broth, one ladle at a time, stirring continuously until the liquid is absorbed before adding more.
5. After about 18-20 minutes, when the rice is creamy and al dente, remove from heat.
6. Stir in chopped parsley, season with salt and pepper, and top with grated Parmesan if desired.
7. Serve warm and enjoy your delicious risotto!