Wiktionary
steak diane
n. A filet mignon, often cooked at the table in a restaurant, seasoned with garlic and black pepper, fry quickly in butter, and flambéed in brandy.
Wikipedia
Usage examples of "steak diane".
The head waiter was now making a great song and dance about cooking Cameron's steak Diane at the table, throwing mushrooms and spring onions into the sizzling butter.
I don't think you're in the mood for Caesar salad and steak Diane, are you, Lieutenant?