Bone Broth French Onion Soup (Wild Diet Approved)


Total time


French onion soup has long been a bar-food staple. We made it Wild by skipping the processed wheat and making it from grass-fed butter, dairy, and slow-cooked pastured bone broth. Enjoy!


Recipe type: Soup

Serves: 4


  • ½ cup grass-fed butter
  • 5 large sweet yellow onions
  • 2 quarts beef bone broth*
  • 1 tablespoon chopped fresh thyme (or 1 tsp dried)
  • 1 teaspoon sea salt (or to taste)
  • 1 teaspoon black pepper
  • 6 ounces Extra Sharp Cheddar (like Kerrygold Dubliner), Parmesan, and/or Gruyere cheese*


  1. Slice the onions into thick rings.
  2. Melt the butter in an 8 quart stock pot or Dutch oven over medium heat. Add the onions and cook, stirring regularly, until translucent– about 7 – 8 minutes. Do NOT brown the onions. If they start to sizzle, turn the heat down and keep cooking over low. Cook time here will depend on how thick you’ve sliced your onions.
  3. Add the beef bone broth, thyme, salt and pepper. Turn the heat down to low and simmer uncovered about 45 minutes, stirring occasionally. The broth will thicken and the onions will become incredibly soft and sweet.
  4. Preheat the broiler.
  5. Slice the cheese thin. Place 4 ramekins or oven-proof soup bowls onto a cookie sheet and fill each with soup. Top with plenty of sliced, sharp cheese.
  6. Broil until the cheese is bubbly and starting to brown on top, about 1 ½ – 2 minutes. Watch this carefully, as broilers vary and the cheese can burn quickly.
  7. Serve hot with a nice green salad.


NOTE #1: Here’s our recipe for making homemade bone broth, or try Kettle & Fire bone broth by clicking here.

*NOTE #2: You can eat this soup without the cheese, and it’s delicious. Just skip right over steps 5 – 7. If you’re using cheese, you can use just one of these listed, but the best flavor happens when you blend the three.


Do you ever think: “Why is everyone freaking out about bone broth?”

Some call it a “health craze.” Others say it’s the “next magic potion in the eternal quest for perfect health.” ABC Television even featured our bone broth recipe in front of 3 million people on TV!

But drinking bone broth certainly isn’t new. It’s steeped in centuries of human existence.

There’s even a South American Proverb that says: “A good broth can raise the dead.”

After using bone broth as a hangover cure for the past few years, I can say they’re right on the money.

Our recipe for French Onion Soup will to take your broth to the next level:

These days, big-time celebs like Kobe Bryant, Salma Hayek, and (of course) Gwyneth Paltrow are drinking broth to look and feel younger and healthier.

Even Bob Harper, host of The Biggest Loser, is drinking bone broth.

But can bone broth really turn back the clock?

What Are The Health Benefits of Bone Broth?

Slow-simmered bone broth is a nutrient-dense powerhouse. And when The Wild Diet won weigh-in after weigh-in on ABC TV, bone broth was our secret weapon. Kurt lost 16 pounds the first week he tried broth!

As he sipped it, he said, “I like it! This is just like the way my grandma used to make us soup!”


You can make bone broth by simmering animal bones (preferably pasture-raised or wild caught) in a slow cooker. Bone broth will be ready in 10 – 24 hours (for poultry and seafood), or 24 – 48 hours for beef bones.

Why is bone broth different from regular broth (or a bouillon cube, for that matter)? This traditional way of slow cooking the bones with a splash of vinegar draws out nutritious collagen. Slow cooking broths also releases amino acids, minerals, glycine, and gelatin—which helps heal the gut and reduce inflammation.

Plus, bone broths are rich in nutrients that are difficult to source elsewhere, including vital minerals like calcium, phosphorous, magnesium, and potassium.

Drinking Bone Broth For Beauty & Weight Loss

Bone broth could be one of your most powerful tools for both your beauty regimen and your weight-loss plan.

Do you suffer from any of these skin conditions?

  • Eczema
  • Cracked, calloused feet
  • Dry skin
  • Broken or weak nails
  • Wrinkles
  • Thinning hair

The nutrients in bone broth nourish skin from the inside out and strengthens nails and hair.

Soup is the new sexy. #BoneBroth #TheWildDiet Click To Tweet

Are you struggling with those last few pounds, or are you just starting on your weight-loss journey? There are many reasons to get your broth on.

Our recipe for French Onion Soup will to take your broth to the next level: broth to heal the gut. Collagen in bone broth strengthens your gut lining, reversing leaky gut that can lead to low-grade chronic inflammation. High levels of glycine and glutamine in bone broth also help heal intestinal issues. These amino acids keep the lining of the gut intact, which promotes better digestion.

Bone broth to boost joint health and mobility. Workouts are impossible when your knees hurt, your back aches, or you have an injury that won’t heal. Bone broth actually contains glucosamine and chondroitin, the very supplement many doctors prescribe for patients with arthritis and other joint pain. Real food for the win!

The glucosamine and chondroitin in bone broth helps strengthen the cartilage, which is what prevents your bones from rubbing together which causes pain when you move.

Bones are full of protein, specifically collagen. Collagen, when cooked for many hours, breaks down into gelatin and other amino acids (glucosamine, proline and glycine to name a few). The presence of gelatin in bone broth is why a true bone broth will gel when you put it in the fridge!

The collagen, gelatin and other amino acids in bone broth also give your body the raw materials it needs to rebuild tendons, bones and ligaments. Recent studies show that bone broth improves the symptoms of arthritis and joint pain.

Want to work out without joint pain? Try a sip of bone broth. Click To Tweet

Bone broth fasting to reduce cravings.  If you read The Wild Diet or watch me on ABC TV, you already know that I enjoy intermittent fasting. Drinking bone broth during the fasting period is fantastic because it’s low calorie, easy on the stomach, and nutrient-dense.

Bone broth can even be a surprisingly satisfying savory substitute for coffee in the morning.

Alyson and I drink bone broth almost every day, and you can usually find a slow-cooker with simmering bones on our kitchen counter.

How To Use Bone Broth In Soup And Stocks

But if you want to take your broth to the next level of flavor, you can also as a base for soups. Our recipe for French Onion Soup (at the top of this page) is a great way to get your feet wet. Enjoy!

Our recipe for French Onion Soup will to take your broth to the next level:

What Are People Doing With Bone Broth?

Here’s what our Fat-Burning Tribe members are saying about Bone Broth…

Katys says:

Our recipe for French Onion Soup will to take your broth to the next level:

Jay Says:

Our recipe for French Onion Soup will to take your broth to the next level:

Rachel says:

Our recipe for French Onion Soup will to take your broth to the next level:

Jennifer says:

Our recipe for French Onion Soup will to take your broth to the next level:

When you incorporate bone broth into your diet over the next few weeks (we recommend 4-8oz per day for optimal health benefits), pay attention to how your body feels…

Do you feel less tired, fewer aches and pains, or fewer digestive issues?

Have you noticed any improvements in your skin, hair, nails or the way you feel since you started drinking bone broth? Share your experience with us in the comments below!

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