Heat olive oil in a large stockpot over high heat. Add tomatoes, zucchini, and corn. Sauté 5-7 minutes or until zucchini has softened. Lower heat to a simmer, add the heavy cream, and let reduce about 10 minutes. Stir in spinach until wilted and transfer to a serving dish.
Sprinkle with goat cheese and basil. Serve with toasted baguette, if desired.