An easy and low calorie alternative for vegetarians which can be cooked on the BBQ or under the grill. Portobello Mushroom Burgers are a delicious alternative to their meaty cousins
Gently fry the red onion in a teaspoon of olive oil till caramelised. Put to one side and keep warm
Continue to grill, topping the mushroom with the cheese slice for the last 2 minutes. Put to one side and keep warm.
Split the burger bun, grill the inside till toasted.
Put your burger stack together. Top the base of the roll with the mushroom (cheese up), then add a good spoon of caramelised onion, then add tomato, then salad greens. If liked, add mustard, ketchup, mayo or a mixture of all three.