Wendy's Sausage, Egg & Swiss Croissant Breakfast Combo is a popular breakfast item available until 10:30 am. The combo includes a sausage patty, a scrambled egg, and Swiss cheese on a warm croissant, and can be paired with a side of fries or a Wellness Salad. The menu item is available to customers in select countries. On the other hand, McDonald's Double Hamburger is a popular lunch and dinner time menu item but not available as a breakfast option.