These burgers are so delicious, it's hard to believe they're lower calorie extra-lean ground beef is seasoned, then cooked and topped with melted cheddar cheese. topped with sliced red onion, fresh avocado, lettuce, and a delicious dijon-mayo herb spread, this burger is piled high on an english muffin. each bite of these healthy beef california style burgers is packed with flavor and fresh ingredients. this is a healthy recipe that is also family and kid-approved.