Heat Olive Oil in 6-quart saucepot over medium-high heat and cook onion, stirring occasionally, 4 minutes or until golden and tender. Stir in broth, Sauce, corn and zucchini and bring to a boil over high heat. Reduce heat and simmer, stirring occasionally, 10 minutes. Stir in vinegar and 1/4 cup basil. To serve, garnish with cheese and remaining 1/4 cup basil.