Introducing the 1,550-calorie donut cheeseburger

Krispy Kreme's concoction is the latest in a line of burger innovations. Last year, Burger King introduced its "pizza burger" and Friendly's in the US replaced its buns with grilled cheese sandwiches.

$8 gets you two Krispy Kreme donuts sandwiching a beef patty, American cheddar cheese, tomato, lettuce, egg and bacon.