To make Sandwiches: Preheat oven to 350F. Coat baking sheet with cooking spray. Lay eggplant slices in single layer on baking sheet, and coat with cooking spray. Season with pepper, if desired. Bake 20 minutes, or until browned and tender, turning once.
Meanwhile, cook green beans in large pot of boiling water (or steam) until tender. Drain and rinse under cold water. Dry well with paper towels.
To make Vinaigrette: Blend olive oil, vinegar, basil, parsley, shallots, mustard (opt) and sugar in blender or food processor until smooth.
Pull out most of soft white bread from centers of baguette halves. Spread tapenade in hollow bottom half. Brush with vinaigrette. Spread green beans over tapenade, and press firmly, Lay red pepper slices on top, followed by egg slices and eggplant.
Brush inside of baguette top generously with vinaigrette, and set over eggplant slices. Press sandwich together, and tie with twine or wrap tightly in wax paper or plastic wrap. Chill 1-4 hours. Slice into 4 servings with serrated knife and serve with any remaining vinaigrette.