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Easy Instant Pot Au Gratin Potatoes

February 1, 2020 by Rose Atwater 2 Comments

Easy Instant Pot Au Gratin Potatoes are easy, cheesy and delicious! I absolutely love how much time is saved by making these cheesy potatoes in my Instant Pot!

Easy Instant Pot Au Gratin Potatoes with pinterest text overlay

My husband is the KING of Au Gratin potatoes at our house. He’s an amazing cook and I rarely dislike anything he makes, but when he makes cheesy, delicious Au Gratin Potatoes… I’m full-on drooling!

However, Au Gratin potatoes take a long time to cook. He usually bakes them for at least an hour and by the time you add in peeling, slicing and all that jazz, they’re not a fast dish.

Until now.

Recently, on a night when I was cooking instead of Richy, I decided to try my hand at Au Gratin potatoes. But since I was short on time, I figured out a way to do them in the Instant Pot.

This cut my cook time down dramatically and while they weren’t as amazing as my husband’s homemade, from-scratch, full-on version… these were really delicious!

Easy Instant Pot Au Gratin Potatoes on a white plate with fork.

Is your mouth watering yet? Mine is. So let’s make them!

Easy Instant Pot Au Gratin Potatoes

Easy Instant Pot Au Gratin Potatoes ingredients

Here’s what you’ll need:

  • 3 pounds potatoes, peeled and sliced evenly (about 1/4 inch slices)
  • 1 cup water
  • 1 teaspoon salt, divided
  • 1/4 teaspoon white or black pepper (or both… we love both!)
  • 2 tablespoons salted butter
  • 1/4 cup all-purpose flour
  • 1 cup milk (we use whole)
  • 2 1/2 cups shredded sharp cheddar cheese, divided

First, mix together the water and 1/2 teaspoon of salt and add to the pressure cooker pot. Then add the peeled, sliced potatoes.

Sliced potatoes in pot for Easy Instant Pot Au Gratin Potatoes

For slicing the potatoes, I cannot recommend highly enough getting a mandoline. I bought my hubby one a few years ago and it’s one of his most favorite kitchen tools!

Shop for tools!

Glass Measuring Cup

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You get perfect slices, every time and SUPER fast! We use it several times a week for potatoes, onions, tomatoes, carrots, cheese, and more! Check out the one we have here.

Anywho… after you add the potatoes, salt and water – set your Instant Pot to manual and cook for 1 minute.

Easy Instant Pot Au Gratin Potatoes cheesy sauce

While the potatoes are cooking, you’ll make the cheese sauce on your cooktop. Melt the butter in a saucepan over medium heat. Stir in flour, remaining salt and pepper. Cook for a minute, then add the milk and bring to a boil.

Mix in two cups of the cheese and remove from heat; stir until completely melted and combined.

Easy Instant Pot Au Gratin Potatoes in baking dish

After the potatoes are done, quick-release the pressure, then prepare a baking dish with nonstick spray. Layer the potatoes with the cheese sauce in the dish.

Easy Instant Pot Au Gratin Potatoes topped with cheese before broiling

Top with remaining cheese and place under a broiler for 2-3 minutes until the cheese is melted and golden brown!

Easy Instant Pot Au Gratin Potatoes with browned cheese on top

Let it cool for just a few minutes and then enjoy these cheesy, delicious Easy Instant Pot Au Gratin Potatoes!!

Easy Instant Pot Au Gratin Potatoes recipe

Questions about this recipe? Leave me a comment!

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Easy Instant Pot Cheesy Au Gratin Potatoes


★★

2 from 1 reviews

  • Author: Rose Atwater
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Description

Instant Pot Au Gratin Potatoes are easy, cheesy and delicious! I absolutely love how much time is saved by making these cheesy potatoes in my Instant Pot!


Ingredients

Scale
  • 3 pounds potatoes, peeled and sliced evenly (about ¼ inch slices)
  • 1 cup water
  • 1 teaspoon salt, divided
  • ¼ teaspoon white or black pepper
  • 2 tablespoons butter
  • 1/4 cup flour
  • 1 cup milk
  • 2 ½ cups shredded sharp cheddar cheese, divided

Instructions

  1. Mix together water and ½ teaspoon salt.
  2. To the electric pressure cooker, add the salt water and then sliced potatoes. Program the electric pressure cooker to cook on “manual” or “pressure cook” for 1 minute.
  3. Meanwhile, prepare the cheese sauce by melting the butter in a medium saucepan over medium heat. Stir in flour, remaining salt and pepper. Cook for 1 minute. Add milk all at once and continue stirring until the mixture comes to a boil. Mix in 2 cups of cheese and remove from heat. The sauce will continue to thicken as it rests.
  4. Preheat the oven broiler. Prepare a 9×9 square baking dish with nonstick cooking spray.
  5. When the electric pressure cooker cycle is complete, perform a quick pressure release. Carefully remove potatoes and layer with cheese sauce in baking dish.
  6. Cover the casserole with remaining cheese, if desired. Place under the broiler for 2 to 3 minutes or until the cheese has melted.

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Filed Under: One Pot Meals

Comments

  1. C. Sterling says

    November 9, 2020 at 9:31 pm

    There was WAY too much flour in this recipe!! I have a lingering suspicion it was a typo, but WOAH. It was super weird lol. I doctored it after adding an assinine amount of flour and it was more a 3 parts milk 1 part flour ratio, it turned out too sweet, of course. Not inedible but definitely wouldn’t recommend this exact recipe. Maybe try 2 tbs of flour rather than 1 cup

    ★★

    Reply
    • Rose Atwater says

      November 9, 2020 at 11:17 pm

      Ohmygoodness! I don’t know how this wasn’t caught before, but it was definitely a typo. Should’ve been 1/4 cup flour, not 1 cup!! Thank you for bringing this to my attention.

      Reply

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