Cheesy Cauliflower Soup

This cheesy cauliflower soup uses cauliflower for a naturally thick, smooth body instead of relying on flour. Simmer the vegetables in 4 cups of broth, blend until velvety, then add cheddar off the heat so it melts without turning grainy.

The recipe makes about 6 cups, or four generous servings, in roughly 30 minutes. Use milk or half-and-half for a richer soup, or choose unsweetened oat milk and dairy-free cheese for a plant-based version.

Cheesy Cauliflower Soup Ingredients and Yield

• 2 tablespoons unsalted butter or olive oil
• 1 medium yellow onion, finely diced
• 2 garlic cloves, minced
• 1 large cauliflower, about 2 pounds, cut into small florets
• 4 cups low-sodium vegetable or chicken broth
• 1 teaspoon kosher salt, plus more to taste
• 1/2 teaspoon black pepper
• 1/2 teaspoon smoked paprika or dried thyme
• 1 cup whole milk, half-and-half, or unsweetened oat milk
• 6 ounces sharp cheddar, freshly grated, about 1 1/2 cups
• 1 tablespoon chopped chives or parsley, optional

Freshly grated cheese melts more evenly than packaged shredded cheese. Sharp cheddar gives the soup a balanced savory flavor, while Gruyère creates a milder, nuttier finish. For a dairy-free cheese cauliflower soup, use plant-based butter, oat milk, and a meltable vegan cheddar-style cheese.

Cauliflower and Cheese Soup: Cook in 4 Cups of Broth

1. Warm the butter or olive oil in a large, heavy-bottomed pot over medium heat.
2. Add the onion and cook for 4 to 5 minutes, stirring occasionally, until soft and translucent. Do not brown it heavily; gentle cooking keeps the soup’s flavor clean.
3. Stir in the garlic, salt, black pepper, and smoked paprika or thyme. Cook for 30 seconds, just until fragrant.
4. Add the cauliflower florets and pour in the 4 cups of broth. The liquid should come close to covering the vegetables. Add a splash more broth only if needed.
5. Bring the pot to a gentle boil, then reduce the heat. Cover partially and simmer for 12 to 15 minutes, or until the cauliflower is completely fork-tender.

The cauliflower must be soft enough to crush easily against the side of the pot. If it still feels firm, continue simmering for 3 to 5 minutes. Blending undercooked florets leaves a gritty texture and makes the soup harder to smooth.

Blend the Soup Until Smooth

Turn off the heat and stir in the milk or oat milk. Blend with an immersion blender directly in the pot for 2 to 3 minutes, moving the blender through the entire batch until no visible florets remain.

For an especially silky cauliflower and cheese soup, transfer the mixture to a countertop blender in batches. Remove the blender’s center cap, cover the opening loosely with a folded kitchen towel, and blend carefully until smooth. Hot liquid expands, so never seal the blender completely while processing.

The blended soup should be thick enough to coat a spoon but still pour easily. If it is too thick, add warm broth or milk 2 tablespoons at a time. If it seems thin, return it to low heat and simmer uncovered for 3 to 5 minutes before adding the cheese.

Add Cheese and Adjust

Let the blended soup cool off strong heat for 1 to 2 minutes. For the smoothest result, the soup should be hot but not boiling, about 160 to 170°F. Add the grated cheddar by the handful, whisking after each addition until fully melted before adding more.

Do not boil the soup after adding cheese. High heat can separate the fat and proteins, creating a grainy or stringy texture. If the cheese resists melting, return the pot to the lowest heat briefly and stir constantly; remove it again as soon as the cheese disappears.

Taste and adjust with more salt, pepper, or a small splash of broth. The finished cheese cauliflower soup should have a smooth, spoon-coating consistency, tender savory flavor, and enough cheddar to taste without overpowering the cauliflower. Serve with chives or parsley and toasted bread.