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a bowl of keto cauliflower soup with a spoon
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5 from 13 votes

Roasted Keto Cauliflower Soup

Simply the tastiest Keto Cauliflower Soup by miles! Many low carb cauliflower soup recipes are loaded with cream and whilst they taste nice, I prefer a healthier and lighter version without cream that’s still incredibly flavoursome.
Prep Time10 minutes
Cook Time43 minutes
Total Time36 minutes
Course: Main Course
Cuisine: British
Servings: 4
Calories: 267kcal

Ingredients

  • 1 cauliflower 500g / 1.1 lb of florets
  • 4 tablespoon butter melted or olive oil for DF (55g)
  • 4 garlic cloves
  • 1 small yellow onion wedges (70g)
  • 2 celery sticks cut into 1 inch chunks (80g)
  • 5 cup chicken or vegetable stock 1.2 litres
  • 1 teaspoon salt or to taste
  • teaspoon black pepper or to taste

Topping

  • ¼ cup grated parmesan 15g
  • 1 tablespoon olive oil

Instructions

  • Preheat the oven to 400F / 200C / 180C fan.
  • Place the cauliflower florets on a baking tray with the onion wedges, celery and garlic. Toss in 4 tablespoon butter and season.
  • Roast for 30 minutes until soft, turning once during cooking.
  • Discard the garlic skins and add everything in the tray to a soup pan, along with the stock. Bring to the boil then reduce to a medium / low simmer and cook for 15 - 20 minutes.
  • Transfer the soup to a blender and blitz until smooth. You may need to do this in two parts! Option to use a stick blender if you prefer. Using a blender makes it much creamier though without needing to add cream. Adjust the seasoning to taste.
  • Ladle into bowls and serve with sprinkling of parmesan, a drizzle of olive oil and optional chopped chives.

Notes

Serves 4 (makes 5 cups) - 1 ¼ cups per serve
Net Carbs: 4.7g per portion.
Storage: Tupperware in the fridge for up to 3 days or freezer for 3 months. 
Optional extras to increase the fat content: 
  • add 1 cup grated cheddar to the soup
  • plus ⅓ cup cream cheese
  • or ⅓ cup heavy cream (and reduce stock by ⅓ cup)
for a vegan keto cauliflower soup, use vegetable stock, olive oil and optional ⅓ cup coconut cream. 

Nutrition

Serving: 300ml | Calories: 267kcal | Total Carbohydrates: 8.3g | Protein: 10.2g | Fat: 22.5g | Fiber: 3.6g | Sugar: 3.8g