Is French Onion Soup from Panera Gluten Free? The Definitive Answer
                                
                                
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                                    4 min read                                
                            
                                According to Panera's allergen information, their Bistro French Onion Soup contains wheat due to ingredients like soy sauce and croutons. For anyone with celiac disease, a severe gluten sensitivity, or a wheat allergy, consuming this soup carries a significant health risk.