International fast-food restaurant chain Burger King and its Australian franchise Hungry Jack's have had a variety of breakfast sandwiches in their product portfolio since 1978.

The Croissan'wich, a portmanteau of the words croissant and sandwich, was introduced in 1983, as part of a menu expansion and as attempt to differentiate BK's breakfast line from McDonald's.

[4] The sandwich attracted criticism for its high fat and caloric content, and was discontinued in the United States for a short while.

[4] It was the first new product launched under the auspices of then CEO Greg Brenneman, and helped boost Burger King breakfast sales by 20%.

Because of its large serving size and high fat and caloric content, the sandwich garnered negative press when first sold.

On November 16th, 2023 Burger King started testing the new Breakfast Grill’wich Sandwich — which features a flame-grilled flatbread filled with eggs, American Cheese and a choice of meat (bacon, sausage or Black Forest ham) — at participating restaurants for a limited time, while supplies last.

When the Croissan'wich was first introduced, television advertisements used a young woman in a BK uniform announcing the new product and having consumers on the street compare it to McDonald's Egg McMuffin much like the Pepsi Challenge.