Slow Cooker French Onion Chicken

Aug 10, 2023Updated Apr 19, 2025

This post may contain affiliate links. Please read our disclosure policy.

Five ingredients are all you need to make this delicious slow cooker French onion chicken. Chicken breasts are butterflied before being topped with sliced onion, onion soup, dried onion soup mix, and Swiss cheese. This tender chicken meal is an easy dinner recipe the whole family will love.

close up of french onion chicken on a spatula.

Ingredients Needed
How to make Crockpot French Onion Chicken:
Variations
My Serving Ideas
Recipe FAQs and Variations
More Slow Cooker Chicken Recipes
Slow Cooker French Onion Chicken Recipe Recipe

One of the top reasons why this French onion chicken crock pot recipe works is because it only calls for just a few ingredients. If you love Crock pot French Onion Soup, then you will LOVE this chicken dish.

Although it doesn’t take much to put this together, it’s still packed with so much flavor. The crock pot chicken grabs its taste from the onion soup’s rich broth and the creaminess from the melty cheese.

Ingredients Needed

Ingredients for french onion chicken on a table with text labels.

Chicken Breasts: I like to use boneless skinless chicken breasts for this recipe. You can either find thinly sliced chicken or cut the breasts in half for thinner chicken pieces.
Onion: A medium sweet yellow onion sliced and slow cooked with the other ingredients not only adds flavor but also provides a little texture with the chicken.
Onion Soup: Skip making this homemade and grab a can of Campbell’s French onion soup, or use a brand of your choice.
Lipton Onion Dry Soup Mix: This onion soup mix is found in packet form and has all the added flavors you’ll need for making a delicious meal. Both the Lipton onion canned soup and dry mix can be used to make lots of different types of meals. Try it in my Slow Cooker Lipton Onion Potatoes and Beer and Onion Beef Ribs.
Swiss Cheese: You can use the sliced Swiss cheese purchased in the pack or sliced from the deli. Once melted, you’ll have a gooey cheese that takes this baking dish to a new tasty level.
{The full recipe is in the recipe card below the images}

How to make Crockpot French Onion Chicken:

Step One – Place the butterflied raw chicken breasts in the bottom of the slow cooker. Top the chicken with the sliced onions and soup mix. Pour over the canned soup.

Step Two – Cover and set slow cooker to the LOW heat setting for 4-6 hours, or until the chicken is cooked through and tender.

chicken, french onion soup mix, and onion ins a slow cooker.

cooked chicken and onions in a french onion sauce.

Step Three – Top the chicken with the Swiss cheese. Cover and cook on low for 30 more minutes

Step Four – Serve the chicken over rice or mashed potatoes, spooning some of the onion sauce from the slow cooker over the top.

Variations

Want to make this recipe your own? Try one of these variations:

You can use skinless boneless chicken thighs instead of chicken breasts if you prefer. You can even use pork chops!
While swiss cheese adds a delicious flavor for this dish, you can substitute it with other types of cheese like classic gruyere cheese, mozzarella cheese, or provolone.
Sweet onion or Vidalia onion works best for this recipe but you can use white or red.
Sliced mushrooms are a great addition to this dish.

My Serving Ideas

This chicken dish is amazing over mashed potatoes!
You can also serve it on a bed of brown or white rice or pasta noodles or egg noodles for an easy and quick meal.
Add a green side dish such as haricot verts, broccoli or a simple green salad.
Since French onion soup is usually served with bread, be sure to include garlic bread as a side dish.

plate of french onion chicken over rice.

Recipe FAQs and Variations

How can I make the chicken more flavorful?

For extra flavor, you can sear the chicken breasts in a skillet before placing them into the slow cooker.

How do I store leftovers?

Leftovers can be stored in an airtight container for up to 3-4 days in the refrigerator.

French onion chicken over rice in front of a slow cooker.

More Slow Cooker Chicken Recipes

If you love easy, flavorful meals, try Slow Cooker Chicken and Broccoli, a perfect combination of tender chicken and fresh veggies, or Slow Cooker Brown Sugar Chicken, which brings a touch of sweetness to every bite.
For a mix of sweet and savory, Slow Cooker Butter Chicken offers a creamy, spiced twist, while Slow Cooker Balsamic Chicken delivers tangy, bold flavors. If you’re in the mood for something with an Asian-inspired taste, Slow Cooker Teriyaki Chicken is always a winner.
Looking for something hearty yet simple? Slow Cooker Chicken and Cabbage is a great choice for a wholesome, satisfying meal with minimal ingredients.