Horseradish Mashed Potatoes

This is my go-to when regular mashed potatoes feel boring – the horseradish gives them a kick without being overwhelming. They’re rich, creamy, and way more interesting than what most people bring to dinner.

June Arthurs
January 23, 2026
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Ingredients (~8 servings)

  • ~4 lbs Yukon gold potatoes
  • 3 garlic cloves, grated
  • 3/4 cup heavy cream
  • 1/3 cup salted butter
  • 12 oz sour cream
  • 2 Tbsp prepared horseradish
  • 1 Tbsp dijon mustard
  • 1/3 cup minced chives
  • Diamond Crystal kosher salt
  • freshly cracked pepper

Boil the Potatoes Until Fork Tender

Peel the potatoes if you want – I usually don’t bother. Cut them into roughly 2-inch chunks so they cook evenly.

Toss them in a large pot and cover with cold water by about an inch. Add a generous hit of salt to the water – it should taste like mild seawater.

Bring to a boil and cook for ~20-25 minutes until they’re very tender when you poke them with a fork. You want zero resistance.

Warm the Cream Mixture While Potatoes Finish

About 5 minutes before the potatoes are done, combine the butter and heavy cream in a small saucepan over medium heat.

Add the grated garlic and warm until you can smell it – usually ~2-3 minutes. Don’t let it brown.

Pull it off the heat and set aside.

Drain and Mash Everything Together

Drain the potatoes in a colander and let them sit for ~30 seconds to steam off excess moisture.

Return them to the same hot pot – this helps drive off more water.

Start mashing lightly, then pour in the warm cream mixture. The potatoes will be loose at first but will thicken as you work them.

Add the sour cream, horseradish, and dijon. Keep mashing until you hit your preferred texture – I like mine with a few small lumps but totally smooth works too.

Fold in the chives and season with salt and pepper. Start with 1 tsp salt and adjust from there – these need more salt than you think.

Serve immediately while they’re hot.

Horseradish Mashed Potatoes

This is my go-to when regular mashed potatoes feel boring – the horseradish gives them a kick without being overwhelming. They’re rich, creamy, and way more interesting than what most people bring to dinner.
prep time15 minutes
cook time25 minutes
total time40 minutes

Ingredients

Ingredients (~8 servings)

  • ~4 lbs Yukon gold potatoes
  • 3 garlic cloves, grated
  • 3/4 cup heavy cream
  • 1/3 cup salted butter
  • 12 oz sour cream
  • 2 Tbsp prepared horseradish
  • 1 Tbsp dijon mustard
  • 1/3 cup minced chives
  • Diamond Crystal kosher salt
  • freshly cracked pepper

Instructions

  • Cut potatoes into 2-inch chunks and place in large pot with salted water.
  • Boil potatoes for 20-25 minutes until fork tender.
  • Warm butter, cream, and grated garlic in saucepan for 2-3 minutes.
  • Drain potatoes and return to hot pot.
  • Mash potatoes and mix in warm cream mixture.
  • Add sour cream, horseradish, and dijon mustard.
  • Continue mashing until desired consistency.
  • Fold in chives and season with salt and pepper.
  • Serve hot.

Notes

Start with 1 tsp salt and adjust to taste. Potatoes need more seasoning than expected.