MUSHROOM BURGER COMBO $ 13.0 ALL-BEEF PATTY W/ GRILLED MUSHROOMS, ONIONS & PROVOLONE. SANDWICH ONLY ………$10.00. Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window