In a shallow saucepan heat oil, add onions and green pepper, and cook 2 minutes. Add garlic and cook 4 more minutes. Add tomato paste, stir well, cook 4 minutes, then add tomatoes. Add a little water to thin, if needed and cook 10 minutes. Finish by adjusting seasonings and stirring in basil. Sprinkle with extra basil when serving.
Yield: About 3 cups