Capri Sandwich

Ingredients

• 2 tsp. white wine vinegar
• 8 1/4-inch thick slices, unpeeled tomatoes
• 1 (1 lb.) loaf French bread
• 1 clove garlic, halved
• 1 (1 lb.) unpeeled eggplant, cut into 1/2-inch slices
• 4 (1/4-inch) thick slices onion
• vegetable cooking spray
• 2 Tbsp. chopped fresh basil
• 1 Tbsp. chopped kalamata olives
• 2 (1 oz.) slices Provolone or Mozzarella cheese, halved