Save almost 950 calories by preparing your own version of a mushroom-Swiss burger. Our
Open-Faced Burger with Onion-Mushroom Topping
(320 calories, 10.5g fat) uses lean ground beef and is served open-faced, eliminating the extra calories from the bread.
Instead of Swiss cheese, onions are used as a topping to cut down on the calories, but if you prefer to leave the cheese,
add 100 calories for every 1-ounce slice.
Try
Blue Cheese-Stuffed Burgers for another lightened burger that's a spin on the classic black and bleu burger.