Steps
1. In a saucepan, heat the vegetable broth and keep it warm on low heat.
2. In a separate pan, heat the olive oil and butter over medium heat. Add the onions and garlic, sauté until translucent.
3. Add the sliced mushrooms and cook until they are tender.
4. Stir in the Arborio rice and cook for 1-2 minutes until lightly toasted.
5. Pour the white wine and let it evaporate while stirring.
6. Add a ladle of warm broth to the rice, stirring constantly until absorbed. Repeat this process until the rice is al dente, about 18-20 minutes.
7. Stir in the Parmesan cheese, and season with salt and pepper to taste.
8. Serve hot, garnished with fresh parsley.