Creamy Cauliflower Potato Soup &#8211; Sally&#8217;s Baking Addiction

Flavorful and satisfying, a warm bowl of this creamy cauliflower potato soup is deliciously comforting on a cold day. Cook all the ingredients on the stove and then blend to get that smooth, silky consistency. You can garnish with crunchy, flavorful toppings like homemade croutons and crispy bacon.

Today’s cozy soup boasts a luxuriously creamy texture without relying on flour, cornstarch, or tons of heavy cream—just a hint of cream is optional! The secret lies in the natural thickening power of potatoes and cauliflower. Combined with savory onion, garlic, and fragrant herbs, it’s bursting with flavor.

It delivers the rich taste of classic potato soup while sneaking in fiber-rich, nutritious cauliflower—and it was a big hit with taste testers of all ages! You can serve alongside a fresh salad and a warm slice of artisan bread, for a meal that will leave you feeling satisfied, but not weighed down.

If you like the flavor and texture of New England-style clam chowder, you’ll love this creamy cauliflower potato soup. 🙂

Why You’ll Love This Soup:

Lightened-up comfort food
Wholesome main dish that can easily be made vegetarian
Naturally gluten free
Creamy consistency, without flour, cornstarch, or lots of cream
Sneaks in nutrient-rich, high-fiber cauliflower—our young taste testers loved this soup!
1-pot meal
Keeps for days in the refrigerator and reheats well
Serve it in a bread bowl or topped with homemade croutons to level up your soup game

2 bowls of cauliflower potato soup with croutons, bacon, and chopped chives.

Ingredients You Need for Flavorful Potato Soup

On their own, cauliflower and potatoes don’t have a particularly strong flavor, so they benefit from this lineup of accompanying ingredients:

Butter: A little butter adds the most delicious flavor, but if you would prefer your soup to be dairy free/vegan, feel free to sub olive oil instead. Note that you will lose a little flavor.
Onion & Garlic: A key base for this soup (and many other delicious meals!).
Lemon Juice: This may seem like a strange addition to cauliflower and potatoes, but trust me, the soup doesn’t taste nearly as good without it. An acid is definitely needed, and a little squeeze of fresh lemon makes a world of difference here, brightening up and rounding out all the flavors. The soup doesn’t taste at all lemony, and without it, the soup tastes like it’s missing something.
Herbs/Seasonings: We’re seasoning this soup with dried thyme and parsley, salt and pepper, and a bay leaf (you’ll remove it before blending the soup).
Broth: You can use chicken or vegetable broth—chef’s choice.
Optional Heavy Cream: For an extra-rich and creamy soup, you can stir in a little heavy cream. But the soup is still deliciously creamy without it!

Best Potatoes to Use

I use Yukon gold potatoes, but you can use any white or yellow/gold potatoes, or russet potatoes. I haven’t tested this with sweet potatoes, but you can certainly try it!

Make sure to peel them before chopping and adding to the pot. The starchy potatoes will cook down in the broth and, once blended, give this soup its thick, hearty texture. There’s absolutely no need for flour or cornstarch.

ingredients on white wooden surface including broth, herbs, bay leaf, pepper, onion, salt, garlic, lemon, and potatoes.

How to Make Creamy Cauliflower Potato Soup

You can make this whole soup in 1 large stockpot or Dutch oven. Start by cooking the onions in the butter. Once they’re beginning to release some moisture and turn translucent, add the minced garlic. Cook and stir for about a minute, and then add the salt, pepper, and herbs. Follow that up with the remaining ingredients. Yep, just toss everything into the pot! (Except the heavy cream; if you’re planning to include it, hold off till the end.)

wooden spoon stirring herbed onions and garlic in pot.

Bring the soup up to a boil, then lower the temperature and let it simmer until the potatoes and cauliflower are nice and soft. Before blending, the soup looks like this:

pot of cauliflower potato soup before blending.

You can use either a regular blender or an immersion blender. The benefit of an immersion blender is you can just keep the soup in the pot for this step. If using a regular blender, you’ll need to blend in batches.

Tips for blending hot soup in a regular (not immersion) blender:

Let the soup cool slightly before transferring it to the blender.
Use a ladle to spoon the soup into the blender, don’t try to pour the hot soup from the pot.
Don’t overfill the blender; fill only about halfway and blend in batches.
Make sure your blender has a vented lid, to allow steam to escape.

If you want to stir in a little cream for extra richness, now’s the time:

pot of cauliflower potato soup with wooden spoon topped with parsley, chives, and bacon.

Toppings & Pairings

For serving this creamy cauliflower potato soup, I like to top it with chopped chives or scallions, parsley, homemade croutons, and/or some crumbled bacon. You could also make a cheesy version by stirring in some freshly shredded cheddar or parmesan cheese.

Serve alongside a fresh green salad with homemade Italian salad dressing, and some crusty artisan bread or ciabatta bread (or enjoy in a bread bowl!).

2 bowls of cauliflower potato soup with croutons, bacon, and chopped chives on top.

If you’re looking for more lightened-up comfort food recipes, be sure to try my butternut squash mac and cheese and creamy chicken noodle soup, too! Both are warming and flavorful, but not too heavy.