What is the name of Arby's signature sandwich made with roast beef and cheddar cheese sauce?

Arby's signature roast-beef-and-cheddar sandwich is called the Beef 'n Cheddar.

The sandwich combines thinly sliced roast beef with cheddar cheese sauce and a distinctive onion roll. It became one of Arby's best-known menu items alongside the chain's classic roast beef sandwich.

Arby's was founded in 1964 by brothers Forrest and Leroy Raffel, who wanted to create a restaurant focused on roast beef rather than the standard hamburger format. The name Arby's comes from the initials of “Raffel brothers,” or R.B.

The Beef 'n Cheddar is sometimes confused with Arby's Classic Beef Roast Beef sandwich. The two share roast beef, but the Beef 'n Cheddar is identified by its cheese sauce and onion roll.