A grilled portobello mushroom burger is a hearty and flavorful veggie sizzler option. Marinate portobello mushroom caps in a mixture of balsamic vinegar, soy sauce, garlic, and herbs. Grill the mushrooms until they are tender and juicy. Serve the grilled mushrooms on toasted buns with your favorite burger toppings like lettuce, tomato, and onion. This veggie sizzler option is a great alternative to meat burgers and is sure to satisfy even the most dedicated carnivores.
