While Roxy’s claim to fame may be its grilled cheese sandwiches, the Veggie Burger should not be missed. A house-made lentil and mushroom patty is layered with lettuce, tomato, and onion, along with melted Muenster cheese and tangy Roxy’s sauce. A vegan version is available on request. Whether you’re near Allston or Central Square at Roxy’s Arcade, you can get your fill of this veggie burger as well as plenty of other vegetarian-friendly handhelds.