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§03 · Dinner · cauliflower-soup

Revised Aug 2026 · 3 revisions

Roasted Cauliflower Soup

Roast it first, blend it, and it turns velvety without a drop of cream. Deep and nutty, with lemon and a scrape of nutmeg to finish.

Illustration of Roasted Cauliflower Soup
Hands-on 12 min Total 45 min Serves4 Ingredients12 Cost / Serv.$1.30 Calories205 Contains Tree nut, Soy
Servings
4 servings
×1

Ingredients

Everything here is already in your pantry.

Ran low on something?

What swaps in

Frozen Cauliflower
Fresh florets 1:1 by weight
Red Onion
Yellow onion milder cooked, none of the anthocyaninsWhite onion sharper raw, none of the anthocyaninsShallots sweeter and finer; about 3 small per onion
Garlic
Fresh cloves 1 tsp jarred = 1 clove
Cashews
Blanched slivered almonds soak longer; slightly grainier when blendedRaw sunflower seeds nut-free, but blends grey-green
Soy Milk
Fortified soy milk same milk with added calcium, D and B12 — the trade is a longer ingredient listDairy milk 1:1; the closest match for protein and bodyOat milk creamier and sweeter, about a third the proteinAlmond milk thinner, with almost no protein
Better Than Bouillon
Any vegetable bouillon paste match to 1 tsp per cup of waterVegetable bouillon cubes usually 1 cube per 2 cupsVegetable bouillon powder check the jar; concentrations varyBoxed vegetable broth use in place of the water
Nutritional Yeast
Grated parmesan similar savory depth, saltier; none of the fortified B12, which is most of why this item is here
Nutmeg
Whole nutmeg, grated markedly better, and keeps for yearsMace lighter and more floral
Bottled Lemon Juice
Fresh lemons 1 lemon ≈ 3 tbsp; brighter, but keeps days rather than months
Extra-Virgin Olive Oil
Butter 1:1 for cooking; browns at a lower temperature, and it sets solid once coldRefined olive oil higher smoke point, less flavorAvocado oil neutral, very high smoke point
Sea Salt
Kosher salt coarser, so more by volume; the ratio depends on the brandTable salt finer and denser; use about ¾ by volume

No close substitute for Black Pepper.

What you'll need

Method

  1. Heat the oven to 425°F. Toss the 5 cups535 g frozen cauliflower and 1110 g quartered onion with the 2 tbsp27 g olive oil and roast 30 minutes, until deeply browned at the edges — that browning is the flavor.
  2. Scrape the roasted vegetables into a pot with the ⅓ cup45 g cashews, the 4 tsp20 g garlic, and the 1 tbsp17 g bouillon dissolved in 4 cups water. Simmer 10 minutes to soften the cashews and cook the garlic down.
  3. Blend completely smooth with the ½ cup122 g soy milk. Stir in the 2 tbsp10 g nutritional yeast and ¼ tsp0.6 g nutmeg, then brighten it with the 1 tbsp15 g lemon juice off the heat. Season with salt, to taste, and pepper, to taste — it comes alive once it’s properly salted.

Kids: go easy on the lemon and blend it fully smooth for a mild, mellow bowl. Or set a few crispy roasted florets aside before blending — some kids like those more than the soup.

Dietary

  • Gluten free
  • Tree nut contains
  • Peanut free
  • Soy contains
  • Sesame free

Nutrition

Per serving · makes 4
Calories205Protein8.0gCarbs17gFiber4.3gSugars5.0gFat13gSaturated Fat2.1gSodium407mg
Vitamins & minerals
Iron1.9mgCalcium53mgPotassium680mgMagnesium58mgZinc1.1mgFolate173µgVitamin C69mgVitamin B123.8µgOmega-3 (ALA)0.01g
Estimated from pantry data, excluding Sea Salt (to taste), Black Pepper (to taste).
Change log · 3 revisions
  1. 12 Aug 2026

    FoundThe soup gets its velvet from a third of a cup of cashews and nothing else, and the blend is thinned with the bouillon water it simmered in.

    ChangedHalf a cup of soy milk goes into the blender, which rounds the texture without touching the roast-and-bouillon flavour that carries the bowl. Kept small on purpose: the cashews already do this job, so this is a lift rather than a rebuild, and the roasted browning stays the loudest thing in the soup.

  2. 7 Aug 2026

    FoundGarlic moved to jarred minced across the pantry, and minced garlic scorches over a 30-minute roast.

    ChangedThe garlic now goes into the pot with the cashews and broth rather than onto the sheet pan, simmering long enough to lose its raw edge.

  3. 14 Jul 2026

    FoundThe top roasted-cauliflower soups all lean on a scant pinch of nutmeg and a squeeze of lemon at the end; blended cauliflower can otherwise read flat.

    ChangedBlended in a little nutmeg and brightened it with lemon juice off the heat, and made a point of salting to taste — small moves that sharpen the roasted flavor without changing the dish.

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Cooked it and something was off — too bland, too thick, timing wrong?

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