Created by Sue Lau on April 3, 2013
Step 1: Preheat oven to 375°F.
Step 2: Set Provolone and Parmesan cheeses aside and reserve for later.
Step 3: In an 8x8 inch square baking dish, make alternate layers of red and green tomatoes with onion, garlic slices, basil, and toasted rectangles of bread, and placing shredded mozzarella on the first layer.
Step 4: Drizzle each layer with olive oil and balsamic vinegar, and season to taste with salt and pepper.
Step 5: Cover dish with foil and bake for 30 minutes.
Step 6: Uncover dish and place Provolone and Parmesan cheeses on top.
Step 7: Return to oven and bake for 25-30 minutes more or until cheese is golden.