Instant Pot Keto Cheesy Cauliflower Soup

This Instant Pot Keto Cheesy Cauliflower Soup is delightfully lush and creamy, with a rich flavor that will keep you coming back for more! Stovetop and slow cooker instructions also included below. Low carb & vegetarian.

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Instant Pot Keto Cheesy Cauliflower Soup Save
Instant Pot Keto Cheesy Cauliflower Soup

This Instant Pot Keto Cheesy Cauliflower Soup is delightfully lush and creamy, with a rich flavor that will keep you coming back for more! Stovetop and slow cooker instructions also included below. Low carb & vegetarian.

  • Preparing Time: 15 minutes
  • Total Time: 30 minutes
  • Served Person: 5
  • Carbohydrate 2.017850972136 g
  • Cholesterol 24.947580328 mg
  • Fat 7.812684367552 g
  • Fiber 0.105524996948242 g
  • Protein 1.572138875864 g
  • Saturated Fat 4.3805109971616 g
  • Serving Size 1 1 serving (28g)
  • Sodium 315.2126953208 mg
  • Sugar 1.91232597518776 g
  • Trans Fat 1.1160171398568 g
  • Calories 83 calories

Step-by-step

  • Combine the raw garlic, cauliflower, water, salt, pepper, and mustard powder in the Instant Pot.
  • Set to Manual / high / 10 minutes.
  • When finished, vent using the quick release.
  • After all steam has been released, remove cover.
  • Stir in mascarpone and shredded cheese.
  • Blend with an immersion blender until smooth.  (alternatively, transfer to a traditional blender and blend until smooth.)
  • Taste and adjust seasoning as desired.
  • Serve hot.
  • Optional - Garnish with fried garlic immediately before serving if desired.
  • Store leftovers in an airtight container in the refrigerator for up to one week or in the freezer for up to 3 months.
  • Combine the raw garlic, cauliflower, 3 cups of water, salt, pepper, and mustard powder in your slow cooker.
  • Set to low and cook for 4 - 6 hours.
  • Stir in the mascarpone and shredded cheese.
  • Blend with an immersion blender until smooth.  (alternatively, transfer to a traditional blender and blend until smooth.)
  • Taste and adjust seasoning as desired.
  • Serve hot.
  • Combine the raw garlic, cauliflower, 3 cups of water, salt, pepper, and mustard powder in a large saucepan.
  • Bring to a boil and then cover and simmer on low for 30 minutes, or until the cauliflower is tender.
  • Stir in the mascarpone and shredded cheese.
  • Blend with an immersion blender until smooth.  (alternatively, transfer to a traditional blender and blend until smooth.)
  • Taste and adjust seasoning as desired.
  • Serve hot.

Undercooking the cruciferous base before blending leaves gritty particles suspended in the broth rather than a velvety emulsion. Raw brassicas require complete cellular breakdown during the pressure cooking phase so that natural starches soften fully. Softened fibers yield smoothly to blade action, trapping fats effectively.

Chemical Synergy of Fats and Dairy

Dairy proteins behave predictably when introduced to acid and heat. Introducing cold cheese directly into boiling broth causes casein proteins to clump, producing an oily separation rather than a uniform emulsion. Residual heat from the cooked cauliflower—maintained between 160 and 180 degrees Fahrenheit during blending—supplies adequate thermal energy to melt fats without scorching delicate milk solids. Mascarpone delivers a high fat-to-protein ratio that coats the tongue, while aged horseradish cheddar introduces volatile sulfur compounds and capsaicin-adjacent bite that cut through the density of the dairy. Ground mustard powder acts as an emulsifier, containing phospholipids that bridge the gap between water and fat molecules.

  • Grainy texture usually stems from under-steaming the florets; extend pressure cooking by two minutes if florets resist a fork.
  • Separation occurs when heavy dairy meets excessive heat; remove the cooker from active heat sources before stirring in the cheeses.
  • Storage containers must be sealed tightly to prevent moisture condensation during refrigeration within the seven-day window.