Steak Diane is a dish of pan-fried beefsteak with a sauce made from the seasoned pan juices. It was originally cooked tableside and sometimes flambéed. It was most likely invented in London in the 1930s. From the 1940s through the 1960s it was a standard dish in "Continental cuisine", and is now considered retro.

A beefsteak, often called just steak, is a flat cut of beef with parallel faces, usually cut perpendicular to the muscle fibers. In common restaurant service a single serving has a raw mass ranging from 120 to 600 grams. Beef steaks are usually grilled, pan-fried, or broiled. The more tender cuts from the loin and rib are cooked quickly, using dry heat, and served whole. Less tender cuts from the chuck or round are cooked with moist heat or are mechanically tenderized.