Slow Cooker French Onion Soup
We are huge fan of soups. Not only are they super simple to whip up in a jiffy, but they’re so hearty and full of flavor. We are always ready to start creating delicious homemade crock pot soups. This Slow Cooker French Onion Soup is a soup we make all year long. We love french onion soup and coup eat it almost any time.
To me, this french onion soup stands out because it’s honestly beyond simple to make. It’s literally as simple as adding in the ingredients, going about your business and running errands and coming home to warm up by the fireplace with a nice hot bowl of soup.
While you’re out and about, don’t forget to pick up a loaf of french bread to go right along with this slow cooker soup!
Can you substitute chicken broth for the beef broth?
While I’m sure you technically can, it will change the overall taste and flavor of the soup. The beef broth gives a nice, hearty and salty flavor that mixed so well with the onions. If you’re wanting to change out for another liquid base, do so but just know that it won’t taste quite the same.
In this recipe the beef broth and onion have the time to meld together to develop a wonderful full body flavor. This of course can be done on the cook top also but by using your slow cooker you can set it and forget it! On the cook top you would have to watch the onions, keep on stirring so they don’t burn. That is time consuming. If I can use my slow cooker to make my life easier you can be sure I’m going to do it.
Where did French Onion soup get it’s name?
French onion soup actually originated in France in the 18th century and has been a traditional soup of France ever since. Leave it to the French right?
How do I make my Slow Cooker French Onion Soup?
- Place the sliced onions in a 5 qt. or larger slow cooker.
- Drizzle over the butter and olive oil.
- Sprinkle the salt and pepper over the top and cook on LOW for 12 hours. (Do this overnight)
- Add in the broth and balsamic vinegar.
- Stir and cook on LOW for an additional 8 hours.
- Preheat oven to 350F.
- Arrange 4-6 oven safe bowls on a sturdy baking sheet.
- Ladle the soup into the bowls.
- Top with a slice of toasted french bread and 1/3 cup of cheese each. Add more cheese if you like.
- Bake 20-25 minutes or until the cheese is browned to your liking.
- Cool 2-3 minutes before serving.
What toppings do you add on slow cooker french onion soup?
For me, none. But I do know that others like to add on some extra toppings. You could add a bit more cheese on top (because you can never have too much cheese, right?!) or even chop up some chives and sprinkle them on as well.
I’ve even known people to add in some fresh jalapenos to give it a bit of a kick!
Don’t overlook the power of a delicious bowl of homemade french onion soup. Let your slow cooker take over and save you from spending hours in the kitchen cooking!
Don’t wait for the colder weather to get here. The time is now to get your soup planning ready and this is the perfect soup recipe to start!
OTHER SOUPS YOU ARE GOING TO LOVE:
You're going to love the taste of this Slow Cooker french Onion Soup. Loaded with caramelized onions and Gruyere cheese. One bowl just isn't going to be enough!
- 3 lbs. yellow onions, peeled and sliced
- 2 tbsp. melted butter
- 2 tbsp. olive oil
- 2 tsp. kosher salt
- Freshly ground black pepper
- 10 cups beef broth
- 2 tbsp. balsamic vinegar
- 4-6 toasted french bread slices
- 1 1/2 -2 cups shredded Gruyere, mozzarella or Asiago cheese or a mix of all
Place the sliced onions in a 5 qt. or larger slow cooker.
Drizzle over the butter and olive oil.
Sprinkle the salt and pepper over the top and cook on LOW for 12 hours.
Add in the broth and balsamic vinegar.
Stir and cook on LOW for an additional 8 hours.
Preheat oven to 350F.
Arrange 4-6 oven safe bowls on a sturdy baking sheet.
Ladle the soup into the bowls.
Top with a slice of toasted french bread and 1/3 cup of cheese each. Add more cheese if you like.
Bake 20-25 minutes or until the cheese is browned to your liking.
Cool 2-3 minutes before serving.