Directions

1. Heat broth and 2 1/2 cups water in a small saucepan over low heat; keep warm. Meanwhile, melt 2 tablespoons butter in a 3-quart saucepan over medium heat. Add zucchini; season with salt and pepper. Cook, stirring often, until zucchini is golden, 8 to 10 minutes. With a slotted spoon, transfer zucchini to a plate.
2. Reduce heat to a medium-low. Add onion; cook until soft, 5 minutes. Season with 1 teaspoon salt and 1/4 teaspoon pepper. Raise heat to medium. Add rice; cook, stirring, until translucent around edges, about 3 minutes. Add wine; cook until absorbed, about 2 minutes.
3. Cook, adding hot broth, 1 cup at a time (stir until almost all liquid is absorbed before adding more), until rice is tender, 25 to 30 minutes total.
4. Add zucchini and peas; cook until peas are bright green, 2 minutes. Remove from heat. Stir in remaining tablespoon butter and Parmesan. Serve, topped with more Parmesan.