Root Vegetable Purée with Cauliflower

This creamy root vegetable purée combines cauliflower, parsnip, celeriac, and sweet potato into a silky, flavorful side dish that pairs beautifully with meat, poultry, or seafood. Naturally dairy-free and easy to make in a pressure cooker or Instant Pot, it gets its rich texture from the vegetables themselves and its deep flavor from warming spices and a simple technique of sautéing the aromatics and vegetables before pressure cooking. Turmeric lends a beautiful golden color and subtle warmth, making this nourishing purée a delicious alternative to mashed potatoes for both everyday meals and holiday tables.

A Flavorful and Nourishing Twist on Traditional Potato Mash

There are endless ways to transform simple vegetables into a creamy, comforting mash. For years, I made a combination of cauliflower, parsnip, and celeriac, but I always felt it needed a little something extra.

The addition of sweet potato certainly helped, bringing a touch of natural sweetness and extra creaminess. But what truly transformed this purée was changing the cooking technique. Instead of simply boiling or steaming the vegetables, I start by sautéing garlic, mustard seeds, turmeric, and allspice in olive oil. Then I add the vegetables and sauté them briefly as well, allowing them to absorb all those flavors before pressure cooking.

This extra step adds remarkable depth and complexity to an otherwise simple vegetable purée. The spices become more aromatic, the vegetables develop a richer flavor, and the finished mash tastes far more interesting than the sum of its parts. Turmeric gives the purée its beautiful golden color, while mustard seeds add a subtle nutty note and contribute myrosinase, an enzyme that can help support the formation of beneficial compounds found in cauliflower and other cruciferous vegetables.

The result is a smooth, velvety purée that works as a side dish for almost any meal. Serve it with roasted chicken, grilled fish, seared scallops, steak, or hearty vegetable dishes. A simple green salad or sautéed greens complete the meal.

If you’re looking for a flavorful alternative to mashed potatoes, this root vegetable purée is nourishing, versatile, and easy enough for both weeknight dinners and holiday meals.

Why You’ll Love This Recipe

• Naturally dairy-free and gluten-free
• Creamy without butter, cream, or coconut milk
• Easy and quick to make in an Instant Pot or pressure cooker
• A delicious alternative to mashed potatoes
• Pairs well with meat, poultry, seafood, and dark leafy greens
• Great for meal prep and reheating

Ingredient Notes

Cauliflower creates the light, fluffy base of the purée while keeping it lower in starch than traditional mashed potatoes.

Parsnip and celeriac add sweetness, depth, and an earthy flavor that makes this purée feel more complex and satisfying.

Sweet potato contributes extra creaminess and a subtle sweetness that balances the stronger flavors of the root vegetables.

Turmeric gives the purée its beautiful golden color while adding antioxidant and anti-inflammatory compounds. A small amount goes a long way, adding warmth and visual appeal without dominating the flavor.

Mustard seeds add a subtle nutty flavor, but they also play a functional role in this recipe. Mustard seeds contain the enzyme myrosinase, which can help support the formation of sulforaphane, a beneficial compound naturally found in cruciferous vegetables like cauliflower. Because cooking can reduce the cauliflower’s own myrosinase activity, adding mustard seeds is a simple way to help preserve some of these nutritional benefits.

Garlic and allspice add warmth and complexity that complement the sweetness of the root vegetables.

Apple cider vinegar may seem like an unusual addition, but it brightens the finished purée and balances the natural sweetness of the vegetables.

Instructions

Prepare the vegetables. Cut the parsnip, celeriac, and sweet potato into medium cubes. Leave the cauliflower in larger florets.

Set a pressure cooker or Instant Pot to sauté mode. Add the olive oil, garlic, and mustard seeds. Cook for 2 to 3 minutes, stirring occasionally, until fragrant. Add the allspice and turmeric, then immediately add the vegetables. Stir well to coat everything in the oil and spices. Add the water, apple cider vinegar, salt, and pepper. Stir to combine.

Secure the lid and pressure cook on high pressure for 3 minutes. Allow the pressure to release naturally for 5 to 10 minutes, then carefully release any remaining pressure. Remove approximately half of the cooking liquid and reserve it, then blend the vegetables using an immersion blender until smooth. Alternatively, transfer everything to a high-speed blender (for a creamier texture).

Add 1 to 2 tablespoons of extra virgin olive oil and blend again. If needed, add some of the reserved cooking liquid to achieve your preferred consistency. Stir in the chives and adjust the seasoning with additional salt and pepper to taste.

Recipe Notes

• If serving to babies under one year of age, omit the salt and spices and purée until completely smooth.
• The purée can be made 1 to 2 days in advance and refrigerated.
• Save any extra cooking liquid and use it when reheating if the purée becomes too thick.
• For a smoother, more elegant texture, blend in a high-speed blender rather than using an immersion blender.

More puree recipes

For more puree recipes be sure to try our:

• Parsnip Purée with Caramelized Onion and Toasted Hazelnuts
• Parsnip and Chestnut Puree with Chives
• Purple Sweet Potato Puree
• Mashed Cauliflower, Celeriac, and Parsnip
• Creamy Celeriac Puree (Dairy-Free, Vegan)

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