Panera Bread’s Bistro French Onion Soup doesn't look as nice as advertised but boasts everything essential for the classic soup, offering savory delight in every slurp.
Per Panera, it's made with "sweet caramelized onions in a savory broth with a sherry wine vinegar gastrique, sea salt, topped with cheese and black pepper and sea salt croutons."
Per "Morton's The Cookbook: 100 Steakhouse Recipes for Every Kitchen,” the soup uses five types of onion, including shallots, Spanish onions, and leeks, and is easy to recreate.
Mimi's Cafe offers a basic yet hearty French onion soup, which, per Mimi’s, includes "a savory broth with onions topped with Swiss and parmesan cheese and a crostini."
The chain has seemingly taken some liberties with a classic French Onion soup recipe by using Swiss and parmesan cheese as toppings, adding earthy complexity to the overall flavor.