Portobello Mushroom Melt: The secret to a satisfying, tastier-than-beef vegetarian "burger"? Substitute portobello mushroom caps rubbed with oil and grilled, then layer on spicy condiments. (This could be made to be very low in calories!
26 Veggie Burgers That Will Make Meat Question Its Very Existence
The Best Grilled Portobello Mushroom Burgers - marinated mushrooms that are grilled w/ melted Swiss Cheese then topped with grilled red onion, tomatoes, spinach, and avocado – yum! No actual burger involved!