Step 1

Heat broth in a medium saucepan over medium-low heat until steaming.

Step 2

Melt butter in a large pot over medium heat. Add shallots and cook, stirring occasionally, until softened, about 2 minutes. Add garlic and cook, stirring, for 1 minute. Add rice, salt and pepper and cook, stirring frequently, until the rice begins to turn translucent, about 1 minute. Add wine and cook, stirring constantly, until it has evaporated, about 1 minute.

Step 3

Add 1 cup of the hot broth and cook, stirring occasionally, until the liquid is absorbed, 1 to 2 minutes. Continue adding the broth, 1/2 cup at a time, stirring frequently and waiting until it has been absorbed before adding more, until you've added all the broth, about 20 minutes.

Step 4

Add corn, spinach and tomatoes and stir until the spinach is wilted, about 1 minute. Remove from heat; stir in Parmesan. Serve the risotto topped with basil and more cheese, if desired.