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5 from 6 votes

Instant Pot Mashed Potatoes

This super easy Instant Pot Mashed Potatoes recipe is so fast and makes the creamiest mashed potatoes! A perfect side dish for any meal!
Prep Time10 minutes
Cook Time8 minutes
Course: Dinner
Cuisine: American, Italian
Keyword: potatoes, side dish
Author: Lora


  • Pressure cooker


  • 3 lbs russet potatoes peeled, cut into rounds
  • 3 cup water or enough to completely cover the potatoes
  • 2 tablespoons butter
  • 1/3 cup milk
  • salt and pepper


  • Peel each potato and immediately submerge them in a large bowl of water to prevent them from turning brown.
  • Set a wire rack insert in a 6-quart or larger electric pressure cooker.
  • Cut potatoes into large rounds. Place the potatoes on the rack and add enough water to cover them by about 1”.
  • Place the lid on the Instant Pot, turn and lock. Make sure that the release valve is in the "Sealing" position.
using the "+" or "-" buttons.
  • 3 Press MANUAL button on high pressure. Using the "+" or "-" buttons, set to 8 minutes. The IP will start cooking.
  • Once cook time has elapsed, allow pressure to release for 3-5 minutes. Use an oven mitt or towel to slowly and carefully twist the steam release handle on the lid to "Venting" position.
  • The initial release will spray some moisture around the pot so be careful.
  • Carefully remove the lid, opening the top away from you as steam will be released from the pot.
  • Place potatoes in a bowl and discard the excess water in the pot.
  • Return potatoes to the IP insert that is still on warm.
  • Using a hand held potato masher, mash the potatoes. Do not use an immersion blender or food processor. Lightly mash the potatoes, more if desired for a smoother consistency.
  • Use a spoon or spatula to gently fold the butter into the potatoes.
  • Whisk together the milk and salt.
  • Heat milk until warmed, about 120ºF (49ºC).
  • While the pressure cooker is still on warm, add the milk in 3 portions until milk is absorbed.
  • Season with pepper if desired, and stir to combine. If needed, add a bit more salt and/or pepper.


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