Willy Burger5535 Calder AvenueOpen now$6.29delivery feeSaladsMeatsChickenFishSpecial BurgersVegetarianEatsFries & RingsDrinksTreatsKids MenuVegetarianPortobello Mushroom BurgerVegetarian. Jumbo portobello grilled and served on a toasted wheat bun. Add your choice of veggies: lettuce, tomato, onion, pickles.$7.99