Keto French Onion Soup

by Clean Keto Lifestyle

This Keto French Onion Soup is the ultimate comfort food! It's cheesy, creamy, and super filling. You'll want to make this recipe over and over again – especially because it's low-carb, keto-friendly, grain-free, and gluten-free!

Keto French Onion Soup

Keto French Onion Soup

Our Keto French Onion Soup will be your new favorite soup!

It's flavorful, hearty, and absolutely keto-friendly.

Serve this up with some keto biscuits and you have the perfect dinner for a chilly night!

A Weeknight Staple

You will want to serve this French Onion soup over and over again.

It'll become a part of your regular weekly menu.

It's family and friend approved – they won't even know it's keto!

Are Onions Keto Friendly?

Onions have about 6 grams net carbs per 1/2 cup – so they're a little on the carb-y side, but that doesn't mean we can't enjoy some Keto French Onion Soup every once in a while.

This soup has 5.7 grams of net carbs per serving. Not too bad!

Remember, everything in moderation.

What's in Keto French Onion Soup?

To make our Keto French Onion soup, we used the following fresh ingredients. 

Pantry Items:

Fridge Items:

  • Butter
  • Onions
  • Garlic
  • Fresh thyme
  • Red wine

How to Make Keto French Onion Soup

First, slice your onions. You want about 2 1/2 cups – so start with 2-3 onions. 

We like to use yellow onions, but white onions work well too!

Saute them in a large soup pot with some butter, garlic, and herbs. 

Then add in some red wine, coconut flour (to thicken the soup), and beef bone broth.  We like the gut-healing power of bone broth – but you can also use beef stock or broth.

And lastly, let the soup simmer to allow all the flavors to develop.

Keto French Onion Soup

The Best Way to Slice Onions for this Soup

Using a chef's knife, trim off  both ends of the onion and remove the peel.

Cut the onion in half lengthwise (from the root to the stem).

Place one onion half on a cutting board flat side down with the root at the bottom.

Cut along the vertical lines of the onion from top to bottom into thin slices.

Don't Forget the Biscuits!

The biscuit recipe is optional for this recipe but definitely worth making.

The cheesy, buttery biscuits go so well with the hearty soup flavors. We make these biscuits all the time.

For a little extra fun, add a few herbs or spices! 

Finishing Touches

Once the soup and biscuits are ready – it's time to take this soup to the next level!

Ladle the finished soup into oven-safe bowls, top with our Keto Biscuits (see recipe below), then top with Gruyere or another good melty cheese.

Turn your oven to broil. Place the soup bowls on a baking sheet or in a large casserole and put in the oven for a few minutes until everything is bubbly and the cheesy is melted and starting to turn golden.

Looking for Other Keto Soups?

Check out these fan favorites:


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