In a saucepan, heat the vegetable broth over low heat. Keep it warm but not boiling.
In a large skillet, heat olive oil and 1 tablespoon of butter over medium heat. Add the chopped onion and sauté until translucent, about 3-4 minutes.
Stir in the minced garlic and sauté for an additional minute until fragrant, careful not to burn.
Add the Arborio rice to the skillet, stirring to coat the grains with oil and butter. Toast the rice for about 2 minutes, until slightly translucent.
Begin adding the warm vegetable broth to the rice, one ladle at a time. Stir continuously and wait until most of the liquid is absorbed before adding the next ladle. This process will take about 18-20 minutes.
Once the rice is al dente and creamy, remove the skillet from heat. Stir in the heavy cream and mix well.
Add grated Parmesan cheese, the remaining tablespoon of butter, and season with salt and pepper to taste. Stir until cheesy and creamy.
Let it rest for a minute before serving.
Notes
Serve in shallow bowls, garnished with parsley and extra Parmesan.