Cauliflower Cheddar Soup Recipe

Make Cauliflower Cheddar Soup Recipe now for a silky, cheesy bowl of comfort in about 55 minutes.

Ingredients

• 2 tablespoons unsalted butter (28 g)
• 2 tablespoons extra-virgin olive oil (30 ml)
• 1 medium yellow onion, finely chopped (about 1 cup / 150 g)
• 1 medium carrot, peeled and finely diced (about 1/2 cup / 70 g)
• 1 celery stalk, finely diced (about 1/2 cup / 60 g)
• 3 cloves garlic, minced
• 1 medium head cauliflower (about 2 to 2.5 lb / 900 to 1,100 g), cut into small florets
• 1 teaspoon kosher salt, plus more to taste
• 1/2 teaspoon freshly ground black pepper, plus more to taste
• 1/4 teaspoon crushed red pepper flakes (optional, for gentle heat)
• 3 tablespoons all-purpose flour (24 g)
• 4 cups low-sodium chicken broth or vegetable broth (960 ml)
• 1 bay leaf
• 1 teaspoon dried thyme or 2 teaspoons fresh thyme leaves
• 1 1/2 cups whole milk, at room temperature (360 ml)
• 1/2 cup heavy cream, at room temperature (120 ml)
• 1 teaspoon Dijon mustard
• 1 teaspoon Worcestershire sauce
• 8 ounces sharp cheddar cheese, freshly grated (about 2 packed cups / 225 g), plus extra for garnish
• 1 tablespoon fresh lemon juice (about 1/2 lemon), plus more to taste
• 2 tablespoons finely chopped fresh chives or green onions, for garnish
• Crusty bread, toasted, for serving (optional)
• Crisp cooked bacon bits, for garnish (optional)
• Homemade or store-bought croutons, for garnish (optional)
• Smoked paprika, for garnish (optional)

Instructions

Step 1: Sauté the aromatics until translucent

Melt the unsalted butter with the olive oil in your heavy-bottomed pot, then add the finely chopped yellow onion. Cook over medium heat, stirring occasionally with a wooden spoon until the onion becomes soft and translucent and the pan smells sweet and savory; this is the aromatic foundation for the whole soup. Add the diced carrot and celery and continue to cook gently until those vegetables are softened and lending a mellow sweetness to the mix, then stir in the minced garlic, crushed red pepper flakes (if using) and thyme until fragrant—30–60 seconds—taking care not to let the garlic brown.

Step 2: Add cauliflower and build the flavor base

Toss in the small cauliflower florets and sprinkle the kosher salt and black pepper over everything. Stir thoroughly so each floret is coated in the glossy fat and aromatics; cook briefly for a few minutes until the cauliflower starts to soften at the edges and picks up a faint golden sheen. This stage should look vegetal and slightly glossy—cauliflower florets nestling together, flecked with thyme and pepper, ready for thickening.

Step 3: Create a light roux then add the broth to form the cooking liquid

Evenly sprinkle the all-purpose flour over the vegetables and stir constantly to form a light, slightly foamy roux that clings to the cauliflower and aromatics. After the raw flour smell has cooked out, gradually whisk in the chicken or vegetable broth, add the bay leaf, bring the pot briefly to a gentle boil and then reduce to a steady simmer. The pot should now present a cloudy, bubbling cauliflower-broth mixture with the bay leaf floating, a visible soft simmer indicating the flavors are marrying.

Step 4: Simmer until very tender and puree to a silky texture

Partially cover the pot and simmer over low heat, stirring once or twice, until the cauliflower is utterly tender and yields easily to a fork. Remove and discard the bay leaf, then use an immersion blender (or transfer in batches to a blender) to blend the mixture until very smooth and luxuriously creamy—no fibrous bits remain. The blended soup should be a uniform, satiny pale ivory, with a dense, velvety body that coats the back of a spoon.

Step 5: Enrich, season, and melt in the cheddar for a glossy finish

With the heat on low, stir in the room-temperature milk and heavy cream and warm gently until steaming but not boiling. Fold in the Dijon mustard and Worcestershire sauce, then add the grated sharp cheddar in small handfuls, stirring continuously so each addition melts into a silky, emulsified sauce; keep the temperature gentle to avoid graininess. Finish with a bright hit of fresh lemon juice and taste for salt and pepper, adjusting for balance. The finished pot should read as a glossy, homogeneous cheddar–cauliflower emulsion with a hint of lemon brightness.

Step 6: Serve warm with garnishes and crusty bread

If needed, adjust thickness with a splash of warm broth or a short gentle reduction. Ladle the hot soup into warmed bowls and garnish each with extra grated cheddar, finely chopped chives, a scattering of croutons, a pinch of smoked paprika and optional crisp bacon bits. Serve immediately with toasted crusty bread on the side—each bowl should look invitingly creamy, with textural contrast from crisp garnishes and a bright green chive scatter.

Notes

• Grate cheddar fresh for the smoothest melt and best flavor.
• Reheat gently over low heat and add a splash of milk if the soup thickens.
• Portion into individual containers before freezing for easy lunches.
• Taste and adjust salt only after cheese is melted to avoid over-salting.