French Onion Chicken is a slow cooker recipe that transforms chicken breasts into a tender, savory dish by braising them with French onion soup, au jus gravy, and melted mozzarella cheese. It delivers restaurant-quality comfort food with minimal active prep time.
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Place the sliced yellow onion in the bottom of the slow cooker.
Arrange the chicken breast halves on top of the onions.
Sprinkle the packet of au jus gravy mix over the chicken.
Sprinkle the packet of onion soup mix on top.
Pour the can of condensed French onion soup over everything.
Top with pads of butter.
Cover and cook on low for 6 hours or on high for 4 hours.
Once the chicken is cooked, place the mozzarella slices on top.
Cover again for a few minutes to allow the cheese to melt.
Serve the chicken hot, spooning some of the sauce from the slow cooker over it.
Refrigerate leftovers in an airtight container up to 3 days. Reheat gently in a skillet or microwave; add a splash of broth if sauce has thickened.
slow cooker
Typically 4 hours on low or 2–2.5 hours on high in a slow cooker, until chicken is tender and cooked through.
Yes. Thighs are more forgiving and stay moist; reduce cooking time slightly since they cook faster than breasts.
No, browning is optional. Skipping it saves time and still yields tender, flavorful chicken.
Yes. Prepare the slow cooker insert the night before (without chicken), refrigerate, then add chicken and cook as directed.
Serve over egg noodles, rice, mashed potatoes, or crusty bread to soak up the rich gravy.
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