Which burger is traditionally stuffed with cheese inside the beef patty?

The Juicy Lucy is a burger traditionally stuffed with cheese inside the beef patty.

This Minneapolis specialty is made by placing cheese between two portions of ground beef and sealing the edges before cooking. As the patty heats, the cheese melts inside it, creating the defining molten center. The burger is commonly served with a bun and ordinary toppings, but the cheese-filled interior is what distinguishes it.

Two Minneapolis bars, Matt's Bar and the 5-8 Club, both claim credit for inventing the sandwich. Matt's spells the name “Jucy Lucy,” while the 5-8 Club uses “Juicy Lucy.” The competing spellings and origin stories are part of the burger's local identity, but they do not change the basic preparation.

Because the cheese is hidden, the burger can be dangerously hot when first served. Diners are often advised to let it rest briefly before biting into the center. It is different from a cheeseburger with a slice melted on top and from a patty melt, which is generally served on griddled bread rather than a conventional burger bun.