Crockpot French onion chicken has all the flavors of a classic French onion soup…paired with chicken breasts. Onions slow cook in beef broth and a homemade French onion soup mix. The shredded Gruyère or Swiss cheese provides the cheesy finishing touch. Whether it’s weeknight family dinners or cozy date nights, this slow cooker French onion chicken will impress any crowd. Instructions to make Instant Pot French onion chicken are also included.