Keto Broccoli Cheddar Soup

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This Keto Broccoli Cheddar Soup is the kind of soup I start craving as soon as the weather cools down. It’s creamy and cheesy without being overly heavy, with plenty of tender broccoli in every bowl.

What I especially like is that it still feels like a proper broccoli cheddar soup. The cheddar flavor comes through, the broth is smooth and creamy, and the little pieces of broccoli give it enough texture that it doesn’t feel like you’re just eating a bowl of melted cheese.

It’s warm, cozy, and filling enough for lunch or dinner, especially with something crunchy on the side for dipping. And since everything comes together in one pot, it’s one of those soups I can make without turning dinner into a whole project.

Why You’ll Love This Keto Broccoli Cheddar Soup

• Creamy, cheesy, and full of tender broccoli.
• Ready in under 30 minutes.
• Made in one pot.
• Approximately 6g net carbs per serving.
• Easy to adjust depending on how thick you like your soup.
• Great for lunch, dinner, or meal prep.
• Naturally gluten-free when made with gluten-free broth and seasonings.

Is Panera Broccoli Cheddar Soup Keto?

Panera’s Broccoli Cheddar Soup is considerably higher in carbohydrates than this homemade version.

According to Panera’s current nutrition information, a 1-cup serving has 17g total carbohydrates and 1g fiber, while a bowl has 25g total carbohydrates and 1g fiber.

This homemade keto broccoli cheddar soup has approximately 6g net carbs per 1-cup serving, based on the nutrition calculation for the recipe below.

Ingredients for Keto Broccoli Cheddar Soup

You’ll find the exact quantities in the recipe card at the bottom of the post.

• Broccoli – Cut the broccoli into small, bite-sized pieces so it becomes tender fairly quickly. I like having some smaller pieces throughout the soup rather than leaving the florets too large.
• Fresh broccoli gives you the most control over the final texture. Frozen broccoli can also work, but it may soften more quickly, so check it earlier during simmering.
• Onion – Adds a little sweetness and extra savory flavor to the base of the soup.
• Garlic – Fresh minced garlic works best here.
• Chicken Broth – Forms the base of the soup. You can use vegetable broth instead if you want to make a vegetarian version.
• Cheddar Cheese – I recommend grating cheddar directly from a block. It usually melts more smoothly than pre-shredded cheese.
• Heavy Cream – Gives the broth its smooth, creamy texture.
• Butter – Used to soften the onion and garlic before the remaining ingredients go in.
• Xanthan Gum – Optional. You only need a small amount if you prefer a thicker soup.
• Smoked Paprika – Adds a subtle smoky note that works really well with the cheddar.
• Salt and Black Pepper – Season to taste, keeping in mind that the broth, cheddar, and bacon can all add saltiness.
• Bacon and Extra Cheddar – Optional toppings that add a little crunch and extra cheesy flavor before serving.

How to Make Keto Broccoli Cheddar Soup

Sauté the Onion and Garlic

Melt the butter in a large pot over medium heat.

Add the diced onion and cook for 2–3 minutes, until it begins to soften and turns translucent.

Add the minced garlic and cook for about 30 seconds, stirring so it doesn’t burn.

Add the Broccoli and Broth

Add the chopped broccoli and chicken broth.

Bring the soup to a gentle simmer and cook for approximately 10 minutes, or until the broccoli is tender enough to pierce easily with a fork.

If you prefer the broccoli slightly firmer, start checking it a little earlier.

Add the Cream and Seasonings

Reduce the heat to low.

Stir in the heavy cream, salt, black pepper, and smoked paprika.

If you’re using xanthan gum, sprinkle in 1/4 teaspoon while whisking continuously so it doesn’t clump.

Keep the soup over low heat for another 2 minutes, allowing it to gently simmer without boiling vigorously.

Add the Cheddar

Turn off the heat.

Add the shredded cheddar gradually, stirring after each addition until the cheese has completely melted into the soup.

Adding the cheese off the heat helps keep the broth smooth rather than grainy.

Taste and adjust the salt and pepper if needed.

Ladle the soup into bowls and top with extra shredded cheddar and crumbled bacon, if desired.

How to Make Broccoli Cheddar Soup Thicker

This soup is creamy, but it isn’t meant to have the extremely thick consistency of a flour-based cheese soup.

If you’d like it thicker, there are a few easy options.

• Xanthan gum: Xanthan gum is my favorite low carb thickening agent because it can be added in small amounts (start with 1/4 teaspoon) and whisked into the soup to thicken it. Remember to use it sparingly, as too much can create a gel-like texture.
• Psyllium husk powder: When added to soup, psyllium husk powder can help thicken the broth and give it a smoother texture. It’s important to note that a little goes a long way, so start with a small amount and gradually add more as needed to avoid over-thickening the soup.
• Guar gum: Start with a pinch or 1/4 teaspoon and gradually increase if necessary. Be sure to whisk or blend it thoroughly into the soup to prevent clumping.
• Coconut flour: Coconut flour absorbs liquid and swells, providing thickness to the broth.
• Simmer and Reduce: Sometimes, simply simmering the soup for a longer period can help reduce the liquid and naturally thicken it.

Why Did My Broccoli Cheddar Soup Turn Grainy?

Cheese soups can turn grainy when the cheese gets too hot or doesn’t melt smoothly.

For the best texture:

• Grate the cheddar from a block rather than using pre-shredded cheese.
• Turn off the heat before adding the cheese.
• Add the cheddar gradually instead of dumping it in all at once.
• Stir gently until each addition melts.
• Don’t bring the soup back to a hard boil after adding the cheese.

If you’re reheating leftovers, use low to medium-low heat for the same reason.

Can I Make This Broccoli Cheddar Soup Vegetarian?

Yes, but you’ll need to make two changes.

Replace the chicken broth with vegetable broth and leave off the bacon garnish.

The rest of the recipe can stay the same.

What to Serve With Keto Broccoli Cheddar Soup

I can easily eat a bowl of this soup on its own, but something crunchy on the side makes it even better.

Try it with:

• Keto Bread for dipping.
• Your favorite low-carb crackers.
• Flaxseed Crackers for extra crunch.
• A simple green salad with a light vinaigrette.

You can also add shredded chicken on top if you want to make the soup more substantial.

For toppings, I like extra cheddar, crispy bacon, or a little freshly ground black pepper.

How to Store Broccoli Cheddar Soup

Refrigerator

Let the soup cool, then transfer it to an airtight container.

Store it in the refrigerator for up to 3–4 days.

Freezer

You can freeze the soup for up to 2 months, but keep in mind that cream- and cheese-based soups can separate slightly once frozen and thawed.

Let the soup cool before transferring it to freezer-safe containers, leaving a little room for expansion.

Thaw overnight in the refrigerator before reheating.

How to Reheat

Reheat the soup gently on the stovetop over low to medium-low heat, stirring frequently.

Avoid boiling it, since high heat can cause the cheese and cream to separate.

You can also microwave individual servings in short intervals, stirring between each one.

If the soup becomes thicker after refrigeration, add a small splash of broth or cream until it reaches the consistency you like.

More Keto Soup Recipes

If you’re looking for more warm and cozy dinners, try these next:

• Creamy Keto Taco Soup
• Tom Kha Gai Soup
• Keto Cream of Mushroom Soup
• Creamy Keto Pumpkin Soup