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Story summary
- Shake Shack introduces a French Onion Menu on September 12, 2025, featuring three burgers and onion rings.
- The French Onion Soup Burger includes an Angus beef patty, Gruyère cheese, caramelized onions, and garlic parmesan aioli.
- The menu also offers the French Onion 'Shroom Burger and the French Onion Shack Stack.
- New sides include crispy beer-battered Onion Rings and Parmesan Garlic Fries.
- The Coffee Shake returns, made with dark roast coffee and vanilla frozen custard. Early access is available via the Shack App starting September 9.
