Name: Creamy Celery Root & Parsnip Mash
Prep time: 10 min
Cook time: PT-1H35M
Total time: 45 min
Cuisine: American
Ingredients: 1 pound celery root, peeled and cut into ½-inch pieces (2 ½ cups); 1 ½ pounds Yukon gold potatoes, peeled and cut into 1-inch cubes (3 ½ cups); 1 pound parsnips, peeled and cut into 1-inch chunks (3 cups, about 3 medium parsnips); 4 tablespoons unsalted butter, plus more for serving; ½ cup whole milk, warmed; Kosher salt and black pepper; 2–4 tablespoons chopped herbs such as tarragon, dill and/or parsley; Flaky sea salt

This silky smooth Celery Root and Parsnip Mash is a modern, and more flavorful, take on classic mashed potatoes.

creamy parsnip and potato mash in a silver oval dish with a pad of butter, pepper, salt and tarragon sprinkled over top

What are parsnips?

Parsnips are a creamy white root vegetable (think white carrot), with a slightly sweet flavor. Starchy and sturdy, parsnips are great roasted, boiled, steamed, or sauteed. They’re also a great ingredient to bake with (like this delicious parsnip cake).

Parsnips will last 2 weeks stored in the refrigerator (often longer).

How to make parsnip mash

Making parsnip mash, or any root vegetable mash for that matter, is very similar to making mashed potatoes.

Bring a large pot of water to a boil; season generously with salt (this lays the foundation for flavor).
Add the diced celery root, bring back to a boil and cook 10 minutes.
Add the diced potato and parsnip, bring back to a boil and cook vegetables until soft, 15–20 minutes.
Drain the root vegetables and pass through a ricer (or food mill) into now-empty pot. Alternatively, you can mash with a potato masher, but it won’t be as smooth.
Cook the mashed root vegetables over medium heat, stirring constantly, to cook off excess moisture—this creates a thick, silky mash.
Stir in butter until melted, then stir in milk to reach desired consistency. Season with salt and pepper. Be generous with the salt—root veggies need it!
Finish the mash with fresh herbs (I like tarragon, but dill, parsley and chives would be great), flaky sea salt (for some texture), black pepper, and melted butter (or olive oil) for a bit of decadence.

How to reheat parsnip mash

The best way to reheat this celery root and parsnip mash is in a saucepan over medium-low heat. Stir frequently and adjust consistency with additional milk as needed.

If you’re looking for a quick reheat, warm up servings in the microwave for a minute or two on high.

What to serve parsnip mash with

Variations: mix up the flavors!

Add a tablespoon or two of prepared horseradish.
Skip the parsnips and make this celery root mash instead.
Add fresh thyme or rosemary
Add a few teaspoons of Dijon mustard.
Make a sweet version with parsnip, honey, and pear (think applesauce).
Add some tang by swapping the butter for sour cream.
Make this mash uber decadent by using heavy cream instead of milk.
Increase the liquid by at least a half of a cup and purée in a blender to create a thinner sauce-like parsnip purée.
Add in mashed roasted garlic for savoriness

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Creamy Celery Root & Parsnip Mash

Author: Lauren Grant
Prep Time: 10 minutes
Cook Time: 35 minutea
Total Time: 45 minutes
Yield: 4 ½ cups (8 servings) 1x
Category: Side dish
Method: Stove top
Cuisine: American
Diet: Gluten Free

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Description

A silky-smooth flavorful alternative to classic mashed potatoes made with celery root, parsnips, and creamy Yukon gold potatoes.

Ingredients

Scale

1 pound celery root, peeled and cut into ½-inch pieces (2 ½ cups)
1 ½ pounds Yukon gold potatoes, peeled and cut into 1-inch cubes (3 ½ cups)
1 pound parsnips, peeled and cut into 1-inch chunks (3 cups, about 3 medium parsnips)
4 tablespoons unsalted butter, plus more for serving
½ cup whole milk, warmed
Kosher salt and black pepper
2–4 tablespoons chopped herbs such as tarragon, dill and/or parsley
Flaky sea salt

Instructions

Bring a large pot of water to a boil; season generously with salt. Add celery root and cook, partially covered, 10 minutes. Add potatoes and parsnips and continue to cook, partially covered until vegetables are fork-tender, 15–20 minutes more.

Drain vegetables and pass through a ricer into now empty pot (or mash with a potato masher until smooth). Cook mashed vegetables over medium heat, stirring constantly, to remove extra moisture, 1–2 minutes.

Reduce heat to low and stir in butter until melted. Add milk and continue to cook, stirring frequently until silky and thickened, about 5 minutes. Stir in ½ teaspoon salt and ¼ teaspoon pepper; taste and adjust seasoning as needed.

Transfer parsnip mash to a serving dish, sprinkle with herbs, flaky sea salt, and black pepper; drizzle with melted butter or olive oil (optional).

Equipment

potato ricer

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potato masher

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Notes

Using a hand mixer: you can use a hand mixer to mash the vegetables. Mix on low speed until desired consistency is reached, being careful not to over-mix which will create a gluey mash. Don’t be tempted to use a food processor for mashing—the resulting consistency will be gluey.

Celery root: For an ultra-smooth mash, use cooking time as a guide but make sure to check the celery root, it should be very soft before draining and mashing.