1. Heat olive oil in a large nonstick skillet over medium-high heat. Add onion, and sauté 2 minutes or until tender. Add red bell pepper; sauté 2 minutes. Add zucchini; sauté 2 minutes. Add eggplant and next 3 ingredients. Bring to a boil; cover, reduce heat to medium-low, and simmer 20 minutes. Uncover; simmer 10 minutes. Remove from heat, and stir in basil.