From Original Poster: San Fran Veggie Sandwich -- YUM! I used a Trader Joe's whole wheat pita instead of bread and it held up beautifully! Definitely do the avocado and hummus, it makes it a 100 times better than a regular veggie sandwich.
Sort of a Hero Sandwich Heroes can be vegetarian too! This giant sandwich stacks grilled portobello mushrooms, roasted yellow peppers, tomatoes, and fresh fennel on a big loaf of bread spread with creamy tomato dressing.