When it comes to a Homemade French Onion Soup recipe, you can make it easily with your slow cooker. There are a few things you can take on board before you make this soup.
First, pick the right onions and decide on the broth. Second, choose the croutons or make your own garlic bread toasts for the soup to evoke all your taste buds.
Choosing the Onions for Your Slow Cooker Onion Soup Recipe
Onions are some of the best ingredients to use to add aroma and textures. This recipe calls for yellow onions with robust flavor and minute bitterness. By the way, this mesmerizing ensemble of tastes is backed up with sweetness that nicely adds on top of the initial flavors.
That is why when you make this simple French onion soup, make sure you’ve got the right onions to begin with.
This easy French onion soup recipe uses caramelized onions. That is why you are in need of a slow cooker Crock Pot. You can caramelize the onions over night or during the time you’re out for work.
Cook the onions with butter in the slow cooker until they are golden brown and sticky. The aroma is incredible!
When you choose a broth for your homemade French onion soup, you can use beef or chicken broth, and even vegetable broth. The French use beef broth for their authentic soup recipe. But any broth will do. Beef and chicken broths will add more flavor to the recipe.
Also make sure you use Gruyère cheese when you top it over the toasted bread slices. That’s the cheese used in the real French onion soup in France.
Onions Health Benefits
How much do you know about the health benefits of a regular onion? Boasting of being a super strong antioxidant and antimicrobial food, onions are included into the list of the top foods that fight inflammation.
Check out a video Graphically Illustrating the Effects of Inflammation on our body.
Chromium in onions help to regulate blood sugar. And the sulfar in onions triggers the release of insulin which, in its turn, lowers blood sugar. This is a great mechanism that comes from a simple onion!
Few people are aware of the fact that onions are rich in soluble fiber (oligofructose). Fiber benefits are many: from keeping us regular to blood sugar regulation to providing the foods to good gut bacteria. Thus onions contribute to a good digestion.
Add the quercetin to the benefits of eating onions. Quercetin is a powerful anti-cancer agent that may inhibit growth of cancer cells in breasts, stomach, colon, prostate, ovarian, endometrial, and lung tumors.
“One 2005 study in Clinical Gastroenterology and Hepatology found that oligofructose [soluble fiber] may help prevent and treat types of diarrhea. The phytochemicals in onions that scavenge free radicals may also reduce your risk of developing gastric ulcers, according to the National Onion Association.“
The Onion Benefits for Women in Menopause
One of the studies published in the Menopause journal indicated that a daily consuption of onions improved bone density in women going through menopause or who have finished menopause.
Women who ate onions frequently had a 20 percent lower risk of hip fracture than those who never ate onions.
More power to the onions in our daily diet!
Should I Add Bread to My Onion Soup?
If you want to stick to the nature of the Classic French Onion Soup recipe, then think about garlic bread with herbs and aromatic spices. I make my own oven-toasted bread slices for this Crockpot recipe.
Get a french bread in the store, slice it up, sprinkle virgin olive oil over the top and sprinkle with your favorite herbs, garlic, and spice mixes. I use organic no-salt seasoning that has about twenty of different herbs in it. You can use this one as well.
Yet Another Easy Meal for the Family with this Crock Pot Chicken Cacciatore Healthy Dinner
I use a baking pan lined up with parchment paper to make my own French croutons for the onion soup. Bake these homemade croutons at 200F for about 30 minutes. I turn off the oven and let the slices sit in the oven until I use them. But you can place them into a container with the lid for storage.
Before Serving, Bake Bowls with Soup In the Oven with Grated Gruyère Cheese
When the onion soup base is ready in your slow cooker, then you’re almost done with cooking. But to add that delicious crust of toasted bread slices with melty Gruyère cheese, you need to place a bowl of cooked soup into the oven for thirty minutes.
I love to enjoy this French Onion soup right out of the oven while it’s still warm. The aroma is one of my favorites that reminds me of good times and that a cooler weather is in the offing, too.
This soup is one of my family most-loved recipes. We like to add green onions and fresh herbs to the plated soup as a final touch.
Supplies for A French Onion Soup
There’s nothing complicated in what kitchen supplies you need to use to make this delicious soup. I give this lineup for any easy accounting. And if you need a baking pan or a roll of parchment paper, Amazon Prime will deliver it to you in no time! Right now, they have the next day delivery available for Prime members.
- Slow Cooker Crock Pot, buy HERE
- Baking or Cookie Sheet buy HERE
- Parchment paper, make your choice HERE
- No-Salt Seasoning, this Jar
- Ceramic French Onion Soup Bowls, get them HERE
If you’re fond of Crockpot recipes, check out this Mexican Chicken recipe rich in protein and fiber and aromatic, too!
Pin for Your Next Family Meal
Take advantage of health benefits in onions by cooking frequently with this truly flavorful andbulb.
Homemade French Onion Soup in Slow Cooker Crock Pot
Family dinners cooked in a Crock Pot can be so delicious and full of flavor. This homemade French Onion Soup can easily become your staple for family meals.
Ingredients
- 3 lbs yellow onions peeled and sliced into quarter moons
- 4 Tbsp unsalted butter melted
- 2 Tbsp olive oil extra virgin
- 2 tsp kosher salt
- 12 cups beef broth or chicken or vegetable if you like
- 2 Tbsp balsamic vinegar
- Black pepper to taste
To Serve
- 2-3 slices of toasted baguette per bowl sliced, herbed, toasted
- ⅓ cup Gruyère cheese per bowl grated
- Chopped green onions and herbs optional
Instructions
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Season the onions. Place the onions in a 5-quart or larger slow cooker. Stir in the butter, oil, salt, and a generous amount of pepper.
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Cook on LOW for 6-8 hours. Cover and cook on the LOW setting overnight until the onions become dark golden-brown and soft.
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Stir in the broth and balsamic vinegar.
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Cook on LOW for extra 6 hours. Cover and continue cooking on the LOW setting for about 6. This is flexible. As long as your slow cooker holds moisture well, you can cook the soup for hours. Longer cooking will only intensify the flavors. Taste and season with more salt and pepper if needed.
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Portion the soup into oven-safe bowls. Arrange a rack in the upper third of the oven and heat to 350°F. Ladle the soup and onions into oven-safe soup bowls.
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Top with toast slices (store-bought or homemade, see my post) and shredded cheese. Top each bowl with a slice or two or three of toast and a generous quantity of shredded Gruyère cheese, about 1/3 cup per bowl (depends on how big the bowl is).
Place the bowls on a rimmed baking sheet into the oven for about 30 minutes.
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When the cheese is melted and looks a bit toasty, remove the soup bowls from the oven and top with fresh green onions and herbs if you wish.
35 thoughts on “Homemade French Onion Soup in Slow Cooker Crock Pot”
French onion soup is my favorite and I’ve tried a bunch of recipes looking for the best one….i even tried one that used apple butter…which was surprisingly good. So i’m going to give this one a try, i don’t think I’ve ever made one with balsamic vinegar before and it sounds like a good idea. thanks.
All of these soups look so good. Major fan of french onion soup but have never made it. This looks easy and not a lot of stuff needed. Wonder does it freeze well?
Gloria,
An onion soups freezes great.
If you have spare containers, just aportion one serving per each. When you need a quick lunch, this soup would be a delicious treat.
One of my favorite recipes indeed.
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I love French onion soup so much, it’s so yummy! Thank you for the recipe, now I can do it myself x
This looks so yummy. Loved how the onions were used (caramelized). I never really had french onion soup just as a soup, just as a seasoning for a dish.
This looks really delcious. Will make this during the weekend and see how the kids enjoy it
Doesn’t really look a homemade thing. I must say, the elegance is great. especially the soup in it.
This french onion soup looks absolutely delicious! I know it smells and tastes amazing. I can just imagine it. I’ll have to make this soon. Thanks for the recipe!
I love the Mexican clay pot it’s in. I love this is soup season I have to try this.
That looks so amazing there. I would love the garlic bread with the onion soup. It’s so amazing. And delicious. I’m going to have to try this out.
Onion soup can be so healthy and I’ve never tried adding bread; I only have it with bread. And I also prefer yellow onions because of their aroma too!
French onion soup has always been one of my favorites. It’s so hearty and delicious.
I showed my son the recipe and the picture. He loves onions in food. I have to prepare for him. Thanks for sharing the recipe.
Someone some time ago mentioned to me a similar dish and I was thinking that it would be lovely to find a good recipe. And here you come with this delicious masterpiece.
This is new recipe for me. I never ever heard about this soup earlier. As we all know Onions have many possible health benefits. Thanks for sharing I will definitely going to try this for sure
I am so happy to learn about the health benefits that onions have. More reason to make this at home!
Oh my goodness, this looks like such a delicious recipe! With so many autumn parties coming up in the near future, this would be a great thing to make when either hosting your own, or being invited to someone else’s!
Emily,
I find this soup goes really well for a small party or big. All matters is your desire to serve it!
I love french onion soup! This looks so good. I can’t wait to whip out my slow cooker this fall and create some tantalizing dishes. 🙂
I love french onion soup! I can’t wait to whip out my slow cooker this fall and create some tantalizing dishes. This looks good 🙂
I love french onion soup! I can’t wait to whip out my slow cooker this fall and create some tantalizing dishes. This looks good 🙂
This look so delicious! I will have to make it soon! Thank you so much for sharing!
It has been ages since I have had French onion soup. I’ll have to make it sometime soon!
This looks delicious. I just love meals cooked in a crock pot. So easy!
This looks so delicious! We have a potluck every Sunday after church, thius would be a great dish to take. Yes, I think bread would go perfect with it! Thank you for sharing your recipe.
This is one of my all time favorite soups. I can’t wait to try this recipe out.
Oh I love this kind of soup. I prefer it with bread of course. Thank you for the recipe!
You made me crave for French onion soup right now! It has been a while since I made a pot, but after reading this post, I decided to make this tomorrow. Love that this recipe is a slow cooker version, so less fuss, more deliciousness!
I love French onion soup but have never made it myself! I’m all about this slow cooker version though. Must try this fall!
I just love French onion soup and it’s the perfect time of year for it. I’m sure my husband will be wanting me to make this a lot.
This recipe looks really delicious! I would love to make it. I always get this soup when I go out to eat.
French onion soup is my favorite, I am always walking over to my local cafe to get some. I need to try this recipe ASAP!
This looks AMAZING!!! I am going to have to try this this Fall!
French onion soup is my husband’s favorite soup. Amazingly enough, I’ve never made it at home. I totally need to make this. I’d be his hero!