These crumbed mushroom burgers with tomato relish are a delicious vegetarian alternative to traditional beef burgers. The mushrooms are coated in a crispy breadcrumb coating and then fried until golden and crispy. The tomato relish adds a tangy and sweet flavor that complements the earthy mushrooms perfectly. Serve these burgers on a toasted bun with lettuce, tomato, and your favorite toppings for a satisfying and flavorful meal.