Sort of a Hero Sandwich

INGREDIENTS

• 1 large round loaf bread
• 6 large portobello mushrooms, stems trimmed to 1/2 inch
• Olive oil, for brushing
• Salt and freshly ground black pepper
• 1 large fennel bulb, thinly sliced
• 7 medium tomatoes, cored and sliced
• 1 small red onion, (4 ounces), peeled, thinly sliced, and rings separated
• 2 large yellow peppers, roasted, peeled, and cut lengthwise into thick slices
• 6 cups fresh basil leaves, washed
• Creamy Tomato Dressing