Add the Arborio rice to the pan. Stir well to coat the rice with the onion and mushroom mixture. Cook for a few minutes until the rice is lightly toasted.
Gradually Add Broth and Wine (if using):
Begin adding the vegetable broth one ladle at a time, stirring continuously. Allow the liquid to be absorbed by the rice before adding more. This process will take about 18-20 minutes. If using white wine, add it along with the broth.
Incorporate Peas and Nutritional Yeast:
When the rice is nearly cooked and has a creamy consistency, stir in the peas and nutritional yeast (if using). Continue to cook until the peas are heated through.
Season and Serve:
Season the risotto with salt and pepper according to your taste. Adjust the seasoning if needed.
Serve Warm:
Serve the risotto immediately while it's still hot.