Place tomato slices, cucumber and onion slices in a large shallow dish. Combine olive oil and next six ingredients in a small bowl; beat with a wire whisk until well blended. Pour vinaigrette over tomatoes. Cover and chill at least 2 hours, basting tomatoes with vinaigrette occasionally. To serve, remove tomatoes, cucumber and onion from vinaigrette and arrange on lettuce leaves. Sprinkle tomatoes with a small amount of vinaigrette. Garnish with green onions and parsley. Yield: 2 to 3 servings. Serve with vichyssoise, French bread and a chardonnay for a light summer dinner. |