Place eggplant in a colander over a plate; sprinkle with 1 tablespoon salt and toss. Let stand 45 minutes. Rinse and drain well; blot dry with paper towels., Place eggplant and remaining vegetables in a 5- or 6-qt. slow cooker. Add oil, dried basil, garlic, pepper and remaining salt; toss to combine., Cook, covered, on low 5-6 hours or until onions are tender. Stir in tomato paste, olives and fresh basil; heat through., Freeze option: Freeze cooled ratatouille in freezer containers. To use, partially thaw in refrigerator overnight. Microwave, covered, on high in a microwave-safe dish until heated through, stirring gently.