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.