01 - In a medium saucepan, bring the vegetable broth to a simmer and keep it warm over low heat.
02 - In a large, heavy-bottomed skillet or saucepan, heat olive oil and 1 tablespoon butter over medium heat. Add the onion and sauté for 2–3 minutes until translucent.
03 - Stir in the garlic and cook for 1 minute until fragrant.
04 - Add the Arborio rice and stir for 2 minutes to toast the grains.
05 - Pour in the white wine and cook, stirring, until it is nearly absorbed.
06 - Add a ladleful (about 1/2 cup) of warm broth to the rice, stirring gently. Allow the liquid to absorb before adding the next ladleful. Continue this process, stirring often, for 18–20 minutes, or until the rice is creamy and al dente.
07 - When about 5 minutes of cooking remain, add the peas to the risotto.
08 - Once the rice is cooked and the peas are tender, remove from heat. Stir in the remaining 2 tablespoons butter, Parmesan cheese, parsley, mint (if using), and lemon zest. Season with salt and pepper to taste.
09 - Serve immediately, garnished with extra Parmesan and fresh herbs if desired.