Is Panera Bread Bistro French Onion Soup - Group High in Histamine?

Panera Bread Bistro French Onion Soup - Group

High histamine

This soup is topped with asiago cheese and croissant croutons, and it runs high from the cheese.

Food here is usually assembled to order from components that were prepped earlier in the day, so it tends to be fresher than a drive-through and less fresh than cooking at home. Histamine builds up as protein foods sit, so how long the chicken or beef has been in the warmer matters as much as what is in the bowl. Treat the rating above as a starting point.

It is a French onion soup finished with asiago cheese and croissant croutons, and the cheese and topping drive it high.

Aged asiago — asiago is an aged cheese, and aging is a classic way histamine builds up, so the melted cheese cap runs high on its own.
Croissant croutons and the broth — the croutons sit moderate, and the soup base itself is flagged high, so together they keep the bowl up.

Without the cheese and crouton topping the base still reads high, so a plainer menu item is the calmer route.

This rating comes from Panera Bread's own published ingredient statement, read on August 23, 2026. Restaurant recipes vary by location and change over time, so always check the current listing: source 1, source 2. How we rate foods →

Panera Bread Bistro French Onion Soup - Group and Panera Bread are trademarks of their respective owners. This page is an independent histamine reference and is not affiliated with, endorsed by, or sponsored by the brand.