Heat 2 fry pans. Spray in Pam. Add a tablespoon of olive oil. Lay sliced eggplant, mushrooms, red and green peppers, 4 onion slices, tomato slices. Sprinkle salt, pepper, garlic, basil, oregeno. Fry five minutes per side. Toast bread completely (to prevent vegetables from gooeying up bread) then add a slice of cheese and a thin spread of mayo. Build sandwhiches, place in one pan, place second pan atop (to compress) and cook two minutes.