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Instant Pot Mashed Potatoes (no-drain)

For an easy, versatile side dish, try this recipe for Instant Pot mashed potatoes! It’s very quick and very simple to make (you don’t even need to drain the potatoes!), and the results are absolutely delicious. Once you try making mashed potatoes in your Instant Pot, you’ll never go back to the old way again!

No drain Instant Pot mashed potatoes in a gray bowl.

Why you’ll love this recipe

When it comes to holiday side dishes, mashed potatoes are a classic. But making them can be time-consuming, especially if you’re doing it all from scratch.

This year, save yourself some time by using an Instant Pot to make your mashed potatoes. Instant Pot mashed potatoes are creamy and delicious, and they’ll free up your stovetop for other dishes.

Plus, they’ll be ready in a fraction of the time it would take to make them the traditional way.

Scroll down for the printable card for this Instant Pot mashed potato recipe, or read on for all the details!

What do you need?


Choose a floury, all-purpose type of potato for fluffy mashed potato. Russet potatoes, Maris piper, Sebago, red potatoes, or Yukon Gold potatoes are all ideal.


You just need a small amount of water for this recipe. Because it is a no drain recipe, we need to use the smallest amount of water possible to cook the potatoes.


Salt helps to season them while they are cooking and speeds up the cooking process.

Butter and milk (or heavy cream)

You need a little of something creamy to offset the starch of the potatoes and stop them from being dry. This recipe uses butter and milk, but you could substitute heavy cream.

Other flavors you can add to mashed potatoes

  • Garlic: add one of two cloves of minced garlic, or ¼ teaspoon of garlic powder.
  • Cream cheese or sour cream to add a more tangy flavor. Goes really well with a sprinkling of chives or sliced green onions.
  • Make cheesy mash by adding ½ cup of shredded cheddar. Try adding some bacon bits and ground black pepper for and extra tasty version!

How to make the mashed potatoes in the Instant Pot

It’s a very simple recipe, but there are a few specific steps and tips to get it just right:

  1. Cut potato into equal-sized pieces around 2-inches across.
  2. Place the potatoes in the Instant Pot bowl with the water and salt.
Cut potatoes in an Instant Pot with water.
Peel potatoes and cut into equal-sized pieces, place in the Instant Pot bowl and cover with water.
  1. Pressure cook on HIGH for 8 minutes. The potatoes should be very, very soft when they have finished cooking.
Pressure cooked potatoes in Instant Pot with butter and milk.
Drain the cooking water, then add the potatoes back into the Instant Pot bowl with butter, milk, and salt.
  1. No need to drain the potatoes, add the butter and milk (or cream) and mash with a potato masher until creamy and fluffy. You can use a stick blender or a hand mixer for extra creamy mashed potato, but be careful not to over-do the mashing as it can make the potatoes heavy and gluey.
  2. Instant Pot mashed potato will keep warm for a while in the Instant Pot. Put the lid back on, but leave it switched off.
Mashed potato in Instant Pot pressure cooker.
Mash potatoes using a stick blender, hand mixer, or a potato masher until it is light and fluffy.

Serving ideas

So my favorite way to serve this mashed potato is as a side to just about anything, and completely slathered in this amazing gravy (made from stock).

But, one of the great things about mashed potato as a side dish is that you can get creative by adding new ingredients to make it your own. Here are some fun ideas to try:

  • Top with butter and sprinkle with fresh chives
  • Add ¼ cup of grated Parmesan cheese and stir through
  • Stir through some goat cheese

Serve it alongside your favorite air fryer steak, slow cooker pulled pork, or roast chicken.

>> Related article: What Goes with Mashed Potatoes?

A bowl of Instant Pot mashed potato with butter melting on top.
Instant Pot mashed potato.

Storage and reheating

If you have any leftover mashed potatoes, store in an air-tight container in the refrigerator and use within three days. You can also freeze it for up to two months.

Reheating in the microwave for around 2-3 minutes on high until piping hot. Stir it and microwave for an extra minute or two if needed.

No drain Instant Pot mashed potatoes in a gray bowl.

Instant Pot Mashed Potatoes

5 from 4 votes
With just a few simple ingredients and less than 20 minutes of cook time, you can have delicious and creamy mashed potatoes that are the perfect side for any meal. Plus, with minimal prep time and hands-off cooking, this recipe is perfect for busy weeknights when you need a quick and easy side dish.
Prep Time5 minutes
Cook Time8 minutes
Total Time23 minutes
Serves4 servings


  • 2 lb / 900 g potatoes ([Note 1])
  • ½ cup water
  • ½ teaspoon salt
  • 2 tablespoons butter ([Note 2])
  • ¼ cup milk ([Note 2])


  • Peel the potatoes and cut into equal-sized pieces approximately 2 inches (4-5cm) across.
  • Place potatoes in the inner pot of the Instant Pot, and cover with water.
  • Close the lid, set the valve to 'Sealing,' and pressure cook potatoes on HIGH for 8 minutes. Then use the quick release to open the Instant Pot.
  • Add the butter and milk, then use a potato masher to mash the potatoes until light and fluffy. Add salt to taste and mix well.


  1. Choose a floury or all-purpose type of potato. Try russet potatoes, Yukon gold potatoes, red potatoes, Maris Piper, or Sebago.
  2. Or substitute heavy cream.


Serving: 1  Calories: 269kcal  Carbohydrates: 49g  Protein: 6g  Fat: 6g  Saturated Fat: 4g  Polyunsaturated Fat: 2g  Cholesterol: 16mg  Sodium: 341mg  Fiber: 5g  Sugar: 3g

Nutrition information is an estimate and provided for informational purposes only.

Recommended equipment

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