01 - Heat the vegetable broth in a saucepan over low heat and keep warm.
02 - In a large skillet or Dutch oven, melt 2 tablespoons butter with olive oil over medium heat.
03 - Add the chopped onion and cook until translucent, about 3 to 4 minutes; then add the garlic and sauté for 1 minute until fragrant.
04 - Incorporate Arborio rice and stir constantly until grains are lightly toasted and edges turn translucent, approximately 2 minutes.
05 - Pour in the white wine and stir continuously until mostly absorbed.
06 - Add warm broth incrementally, half a cup at a time, stirring frequently and allowing liquid absorption before adding more; continue until rice is al dente and creamy, about 18 to 20 minutes.
07 - Remove from heat, stir in Parmesan cheese and remaining 2 tablespoons butter until melted and creamy; season with salt and pepper to taste.
08 - Serve immediately, garnished with chopped parsley and additional Parmesan if desired.