Creamy Onion Cauliflower Soup (Printable)

A velvety blend of sweet onions and tender cauliflower, perfect for a light, comforting low-carb meal.

# Required Ingredients:

→ Vegetables

01 - 1 medium head cauliflower (about 1.3 lbs), cut into florets
02 - 2 large yellow onions, sliced
03 - 2 cloves garlic, minced
04 - 1 stalk celery, chopped

→ Liquids

05 - 4 cups low-sodium vegetable broth
06 - 1 cup unsweetened almond milk or heavy cream

→ Fats & Seasonings

07 - 2 tablespoons olive oil or unsalted butter
08 - 1/2 teaspoon sea salt, plus more to taste
09 - 1/4 teaspoon ground white or black pepper
10 - Pinch of freshly grated nutmeg, optional

→ Garnish

11 - Chopped fresh chives or parsley, optional
12 - Swirl of heavy cream or olive oil, optional

# Preparation Steps:

01 - Heat olive oil or butter in a large pot over medium heat. Add sliced onions and chopped celery. Sauté for 8 to 10 minutes until onions are soft and translucent.
02 - Add minced garlic and cook for 1 minute until fragrant.
03 - Add cauliflower florets and sauté for 2 additional minutes to lightly caramelize the surface.
04 - Pour in vegetable broth. Bring to a boil, then reduce heat, cover with a lid, and simmer for 20 minutes until cauliflower is very tender.
05 - Remove from heat. Use an immersion blender to puree the soup until smooth and creamy. Alternatively, carefully blend in batches using a countertop blender and return to pot.
06 - Stir in almond milk or cream, sea salt, pepper, and nutmeg if desired. Warm gently over low heat without boiling. Adjust seasoning to taste.
07 - Ladle into bowls and serve hot. Garnish with fresh chives, parsley, or a swirl of cream if desired.

# Expert Suggestions:

01 -
  • It's velvet-smooth without any cream required, thanks to the natural creaminess cauliflower brings when blended.
  • Comes together in under an hour, making it perfect for weeknight dinners when you want something substantial but aren't up for complicated cooking.
  • Works beautifully with whatever liquid you have on hand, whether that's vegetable broth, almond milk, or actual cream if you're feeling indulgent.
02 -
  • Don't skip the slow sauté of the onions and celery at the beginning; this step is where the soup gets its natural sweetness and depth, and rushing it results in a thinner, less flavorful soup.
  • Taste and adjust seasoning after blending, because the flavors can concentrate or change slightly during the cooking process, and you might need a bit more salt than you think.
03 -
  • Cut your cauliflower and other vegetables into roughly the same size so they cook evenly and the soup blends smoothly without any unexpected texture.
  • If your soup seems too thick after blending, thin it with a bit more broth or almond milk, adding slowly until you get the consistency you love.
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