
A cold-weather classic, French onion soup, is coming to a fast-food chain — but not in a crock.
Shake Shack just announced it is launching a French onion-inspired menu, with flavors inspired by the soup — at restaurants nationwide Sept. 12. (Shack App users got early access, though, starting Sept. 9.)
The leading star of its soup-but-solid menu is the new French Onion Soup Burger, which is accompanied by other items that feature Gruyère cheese, caramelized onions and garlic Parmesan.
A standout on the lineup is the “most requested side from Shack fans”: onion rings. The deep-fried side comes after the chain introduced a new side for the first time ever — fried pickles — back in May, for a limited time.

What’s on Shake Shack’s French Onion Soup Menu?
- French Onion Soup Burger ($10.99) features a quarter-pound 100% Angus beef patty topped with Gruyere cheese, caramelized onions, crispy sweet onions and roasted garlic Parmesan aioli on a toasted potato bun. The allium-packed item is available as a single, double or triple.
- French Onion ‘Shroom Burger ($11.29) features a fried portobello mushroom filled with melted Muenster and cheddar cheeses, topped with caramelized onions and roasted garlic Parmesan aioli, all on a toasted potato bun.
- French Onion Shack Stack ($14.29) features a quarter-pound 100% Angus beef patty topped with Gruyere cheese, a ‘Shroom Burger, caramelized onions and roasted garlic Parmesan aioli on a toasted potato bun.
- Onion Rings ($5.49) are made with sweet Spanish onions, beer-battered and served with the choice of sauce.
- Parmesan Garlic Fries ($5.99) are crinkle-cut potatoes sprinkled with Parmesan cheese and served with a side of roasted garlic Parmesan aioli.

Apart from its French onion soup menu, Shake Shack also brought back its Coffee Shake (starts at $5.99), available now at restaurants nationwide, ahead of National Coffee Day. The cool drink is made with dark roast coffee and house-made vanilla frozen custard, with an optional whipped cream topping.
Shake Shack Is Leaning Into Premium Offerings
The prices of these new items are above Shake Shack’s other menu offerings, much like the Dubai Chocolate Pistachio Shake, which was available in April, and again in June, for a limited time and priced at $7.99.
That item was the highest-priced shake in the company’s history and it sold out nearly everywhere, CEO Rob Lynch told CNBC.
He called the chain’s premium offerings the “democratization of fine dining.”
“We are really bringing great value to the marketplace by delivering burgers that you’re going to have to pay $25 for in a local burger shop, and we’re selling them for $10 or $11,” Lynch added.