Place the mushrooms, red and yellow pepper, zucchini, onion in a large bowl. Sprinkle on the basil, thyme and tarragon. Toss with the olive oil. Transfer the veggies into a BBQ wok. Heat BBQ to medium and stir fry for 25-35 min. until veggies are tender.
Preheat panini maker. Lightly butter the outsides of the bread and mound on the veggies dividing them among the three sandwiches. Sprinkle each sandwich with some of the goat cheese and then the mozzarella. Top with the other slice of bread with the butter side out.
Place as many sandwiches that will fit into the panini maker and close the lid. Grill until the cheese is melted and the outside is nicely grill marked. Again this is where healthy meets great tasting!!