Step 1

In a large saucepan, bring broth to a simmer; keep hot. In another large saucepan, heat oil over medium heat. Add onion; cook and stir until tender, 3-5 minutes. Add rice and lemon zest; cook and stir until rice is coated, 1-2 minutes.

Step 2

Stir in wine. Reduce heat to maintain a simmer; cook and stir until wine is absorbed. Add hot broth, 1/2 cup at a time, cooking and stirring until broth has been absorbed after each addition; add broccoli after half the broth has been added. Cook until rice is tender but firm to the bite and risotto is creamy. Remove from heat; stir in cheese and lemon juice. Sprinkle with thyme. Serve immediately.