The Classic Soup, Reinvented! Shake Shack’s French Onion Menu Has Arrived
26 Feb 2026 — 20 May 2026
This winter, Shake Shack is serving up next-level comfort with the arrival of its French Onion limited-time menu.
Inspired by the deep, savoury flavours of the classic soup, the menu layers caramelised onions, Emmental cheese, crispy shallots and roasted garlic mayo across signature Shack classics.
Here’s what’s on the menu:
French Onion Burger (single or double) Emmental cheeseburger topped with crispy shallots, caramelised onions and roasted garlic mayo
French Onion ’Shroom Crisp fried portobello mushroom filled with a blend of melted cheeses, topped with caramelised onions and roasted garlic mayo
French Onion Shack Stack Emmental cheeseburger topped with a ’Shroom Burger, caramelised onions and roasted garlic mayo
Roasted Garlic Mayo Fries Crispy crinkle cut fries topped with roasted garlic mayo, parmesan and spring onions
Onion Rings Crispy beer-battered onion rings made from sliced sweet Spanish onions, served with tangy sour cream & onion sauce or roasted garlic mayo.
Chocolate Churros Shake Hand-spun cinnamon churro frozen custard topped with spiced dark chocolate sauce, whipped cream and chopped churros
Pineapple Mint Lemonade Pineapple purée and mint mixed with our house-made lemonade


This menu is available for a limited time only—from 26 February to 20 May, exclusively at UK Shacks.
