Sous vide mashed potatoes are the creamiest mashed potatoes you will ever make because they cook in butter and cream instead of water. Using a combination of russet and yellow potatoes, this mash is fluffy and delicious and sure to be a crowd pleaser.

Sous vide is one of my favorite ways to make mashed potatoes. If you’re cooking a big meal or for a crowd (i.e. a holiday!), you can get the ingredients ready ahead of time. Add nearly everything to a bag and throw it in your fridge until you’re ready!
They’re also insanely creamy when prepared this way. Since these potatoes are cooking in cream and butter instead of water, they’re even richer than your standard mashed potatoes.
Looking for even more sous vide mashed root inspo? Grab a copy of my first cookbook, Everyday Sous Vide, for recipes for sous vide mashed sweet potatoes, turnips, and more!

I’m so glad you found this recipe!
I can’t wait to be a part of your sous vide cooking today, and hopefully more to come!
I’ve been passionate about sous vide for almost a decade now. I take a different approach from other sous vide experts. While I love the science of sous vide, I want it to be an approachable cooking technique for everyone, and I don’t want you to sweat the details.
If you’re new to sous vide, make sure to read through this blog post or consider joining Sous Vide School.
I also have two sous vide cookbooks I think you’ll love: Everyday Sous Vide and Sous Vide Meal Prep.
Got questions?
Leave a comment and I’ll get right back to you!
I like to use a mix of potatoes: yellow and russet. Yellow potatoes are a little waxier (Yukon golds are best!) and Russets are starchy which will give you fluffier potatoes. I also use a mix of heavy cream and milk. This provides the right balance of creamy goodness and liquid you’ll need to cook them. Feeling indulgent? Play with the ratio and go heavier on the cream if you want!




Get the Recipe:
The Creamiest Sous Vide Mashed Potatoes
Ingredients
- .8 lb russet potatoes (about 1 large), peeled & cut into 1 inch cubes
- 1.6 lbs yellow potatoes (about 4 large), peeled & cut into 1 inch cubes
- 1/2 cup salted butter, sliced into pats
- 1 1/2 tsp kosher salt
- 1 tsp Italian seasoning
- 1 1/2 tsp garlic powder, (sub with 4 cloves minced garlic if desired)
- 1/2 tsp freshly cracked black pepper
- 1/2 cup milk (1%, 2%, or whole)
- 1/3 cup heavy cream
- 1/4 cup sour cream
Equipment
- Chamber Vacuum Sealer (optional)
- Sous Vide Container
- Potato Masher
Instructions
- Preheat a water bath using an immersion circulator to 190 degrees F.
- Add the potatoes, butter, salt, pepper, garlic powder, and Italian seasoning to a gallon-sized zipper top or chamber vacuum seal bag. Toss to evenly disperse. Add the milk and cream.
- If using a gallon-sized zipper top bag, use the "arm method" or water displacement method to remove the air from the bag (see tutorials here). Otherwise, remove the air with your chamber vacuum sealer.
- Place bag in preheated water bath and cook for 2-4 hours. Make sure potatoes stay completely submerged using sous vide magnets or by placing a ceramic plate or bowl on top of the potatoes.
- After the potatoes are done cooking, transfer the contents of the bag to a bowl. Add the sour cream. Mash using a potato masher to your desired consistency. Taste and add additional salt if desired. Serve.

Delicious! I made these and was so happy! Instead of moving the potatoes and mashing, I used a rolling pin over the bag to mash them and transferred them to a serving dish since I didn’t add sour cream.
Thank you, easy to follow!
Smart! Love this!
Simple, clear instructions with delicious mash potatoes.