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Horseradish Mashed Potatoes

These Horseradish Mashed Potatoes are the most delicious combination of creamy and tangy. It pairs perfectly with steak or as a side dish for the holidays!

Horseradish Mashed Potatoes with chives in a while bowl next to a wooden spoon and linen napkin.

Horseradish Mashed Potatoes

Mashed potatoes have to be one of the best side dishes for dinner in general and adding in horseradish really only makes them better. It’s the perfect pairing for steak or just as a side dish if you’re someone who loves the spice horseradish brings.

The combination of sour cream and horseradish pair together to bring a great tang to the potatoes. It helps cut through the richness of the butter and milk making it hard to stop at just one serving.

It takes the need for a horseradish sauce away even cutting back on the work you need to do to recreate a steak dinner at home! Pair it with this Cast Iron Filet Mignon to really make an awesome meal.

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Horseradish Mashed Potatoes Ingredients

  • Russet Potatoes
  • Butter
  • Milk
  • Sour cream
  • Prepared horseradish
  • Salt and black pepper
  • Chives
A lavender braiser filled with swirled horseradish mashed potatoes.

Ingredient Substitution

Russet potatoes are usually the best kind of potatoes that absorb all the flavors that you add to them while still staying creamy, light and fluffy, but Yukon Gold potatoes are a good alternative if you have those on hand.

Waxier potatoes like red skin potatoes might not end up as creamy as you hope since they are less starchy. I heartily believe that Red Skin Mashed Potatoes have their place though!

Prepared horseradish will give you the best kick, but if you already have creamy horseradish sauce on hand, that’ll work too! You may want to increase the amount since it’s diluted a bit.

I prefer using unsalted butter as a starting point to be able to build up the salt content on your own through the water and adding salt throughout, but salted butter will work great as well.

Horseradish mashed potatoes topped with diced chives in a large enameled pan.

What should I use to mash the potatoes?

I think there’s two camps of mashed potato lovers: The hand mashed fans and the ultra creamy fans.

For the hand mashed fans, you can just use a spatula or potato masher to keep some of the chunks of potatoes.

For the ultra creamy fans, you can also just use a potato masher and a lot of dedication, or whip out your hand mixer to blend the potatoes until all of the potato chunks are gone.

Can I make Horseradish Mashed Potatoes ahead of time?

Mashed potatoes are an easy win when it comes to prepping sides ahead of time, especially for Thanksgiving. It’s a dish that holds up well to reheating after it’s already made.

You can make the entire dish and just reheat in a pot when it’s time to eat. You may want to add a little more milk or sour cream if it’s thickened up a bit.

A plate filled with horseradish mashed potatoes and sliced filet mignon.

Make it a Meal

Horseradish Mashed Potatoes in a white bowl topped with chives next to a filled plate with filet mingon slices.

How to make Horseradish Mashed Potatoes

Put your cut potatoes into a large pot with water and salt, if desired, and cover with water. Turn up the heat and bring to a boil until the potatoes are fork tender, about 20 minutes, then drain them.

Use the same pot and add the potatoes back into it. Lower the heat and start slowly mashing the potatoes to get rid of some of the steam that the potatoes are holding on to. That’ll help make sure the texture is creamy instead of soupy!

Remove the pot from the heat and stir in the butter. Continue hand mashing until you melt the butter and then add in the room temperature milk, sour cream, prepared horseradish, salt, and pepper. Stir it around until it reaches your desired texture!

Horseradish Mashed Potatoes with chives in a while bowl next to a wooden spoon and linen napkin.

Horseradish Mashed Potatoes

Yield: 8 servings
Prep Time: 10 minutes
Cook Time: 35 minutes
Total Time: 45 minutes

These Horseradish Mashed Potatoes are the most delicious combination of creamy and tangy. It pairs perfectly with steak or as a side dish for the holidays!


  • 2 and ½ pounds (about 4 large) russet potatoes, peeled and chopped
  • 1 stick unsalted butter
  • 1 cup milk
  • 1 cup sour cream
  • 3 tablespoons prepared horseradish
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • Freshly chopped chives, for garnish


  1. Put the peeled and cut potatoes into a large pot and cover with water. Bring to a boil and lower the heat to medium-high until potatoes are fork tender, about 20-25 minutes.
  2. Use a colander to drain the potatoes and put potatoes back into the pot.
  3. Put the pot back on low heat and use a fork or spatula to stir the potatoes around until most of the steam is gone.
  4. Remove from heat. Add butter and continue to hand mash until butter is melted. Add in milk and sour cream and mix in until well combined. Add in prepared horseradish, salt, and pepper and mix thoroughly. Use a potato masher if the potatoes aren't fully mashed. Garnish with chives, if desired.


  • Yukon Gold potatoes are a great option if you don't want to use Russet potatoes.
  • Creamy horseradish sauce is a good alternative for prepared horseradish. You may want to increase the amount to equal the same amount of spice!

Recommended Products

As an Amazon Associate and member of other affiliate programs, I earn from qualifying purchases.

Nutrition Information:
Yield: 8 Serving Size: 1
Amount Per Serving: Calories: 187Total Fat: 18gSaturated Fat: 10gTrans Fat: 0gUnsaturated Fat: 6gCholesterol: 50mgSodium: 314mgCarbohydrates: 6gFiber: 0gSugar: 3gProtein: 2g

Nutrition provided is only an estimate.

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Sam Ellis

Hey there! I'm Sam and if there are two things I love most in this world, it's food and travel... and my dog, Tucker. I'm using my little corner of the internet to explore everything I love and I'd love for you to join me!


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