Instant Pot Steel Cut Oats

4.84 from 6 votes
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Instant Pot steel cut oats is a quick and healthy breakfast made in about half the time compared to the stovetop method. Cooking the hearty oats in a pressure cooker creates a tender and creamy consistency without constant stirring.

Instant Pot steel cut oats recipe served in a bowl with berries.

Steel cut oats have a delightfully nutty flavor that cooks into a creamy porridge but with a slight chew. One drawback is that the robust groats take substantially longer to cook than rolled oats. That obstacle stops most of us from grabbing the container on those hectic days. The solution is to use the Instant Pot. It’s a game-changer!

Using an electric pressure cooker has several advantages. The elevated boiling point in the enclosed vessel cooks the grains in just 6 minutes. Giving them a chance to sit and absorb the residual water ensures perfect consistency. One of the best perks is that you don’t need to stir the pot at all. It’s a hands-off experience until you’re ready to serve!

Why it typically takes so long to cook

Glass jar of raw steel cut oats.

Oats are hearty cereal grain that comes in many different types. There are even gluten-free certified products. Steel cut oatmeal is unique because the bran is still left on. The result is oat groats, which have a wonderful nutty flavor.

Fiber-packed and nutritious groats are chopped into smaller pieces to cook easier. They’re minimally processed and have not been steamed to pre-gelatinize the starches. Therefore, softening the outer bran, inner endosperm, and germ takes more work and time.

Pressure cooking saves you time!

There are a handful of ways to cook steel cut oats. The slow cooker, microwave, or overnight oats are some of the most convenient methods. That’s until the Instant Pot grew in popularity.

Locking the oats and water in a pressurized chamber, around 11.6 psi increases the liquid’s boiling point from 212ºF (100ºC) to around 242°F (117ºC). That means that the bran gets softened faster while the starches hydrate and swell quicker than any other method, especially compared to the stovetop.

Variation in the oat-to-water ratio

Pouring water into an Instant Pot with steel cut oats inside.

Using typical cooking methods, 1 cup of steel cut oats needs 4 cups of water. This factors in water evaporation out of the cooking vessel during the time necessary to hydrate the grain. However, since the pressure cooker is a closed pot, no steam or moisture is released, as everything stays inside. You only need 3 cups of water instead of 4 to cook the oats in the Instant Pot.

Texture changes at different cook times

For creamy oatmeal with contrasting chew and some separate grains, cook on high pressure for 6 minutes and naturally release the pressure for 15 minutes. I tested a wide range of times and natural pressure release combinations (from 1 to up to 20 minutes at high pressure) and found that this was the optimal texture and consistency.

Interestingly, the oats can cook from as low as 1 minute for the chewiest texture to as high as 20 minutes for the softest and most porridge-like consistency, similar to quick cooking oats. As time increases, the grain texture becomes less chewy and thicker.

Let the oats sit after cooking

You’ll notice that some water will sit on top when you open the pot. This is good! The oats need that extra moisture mixed in to complete the absorption process. This allows the grains to be suspended in the water and thicken to just the right consistency. About 10 minutes is perfect for sitting before eating.

The role of rice starches

Oats have a high starch component which helps them go from tough grains to soft, thick, hot cereal. This is due to starch gelatinization (absorption and swelling) and pasting (thickening). As the oat starches swell, they soften and create a creamy consistency. Over time they thicken up, especially as they cool down and sometimes clump together.

What about using milk?

Metal spoon scooping steel cut oats out of an Instant Pot.

If you’re like me, you enjoy the extra richness of dairy milk or plant-based options to add to the oatmeal. I tested cooking oats in regular and almond milk. Because there are other solids in the cow’s milk (protein, sugar, fat, vitamins, minerals), the oats have a little more chew because less water is available.

Also, the sugar and proteins in the dairy cause some maillard browning in the bottom of the pot, giving it a cooked flavor (which some people may like). I recommend not using more than 3 cups of milk in the recipe (half of the liquid) to prevent scalding or curdling. The best solution is to add a splash of your preferred milk before serving.

Add your favorite mix-ins or toppings

  • Milk: Dairy, nut milk, or plant-based products like cashew, oat, soy, or almond milk to add richness in flavor.
  • Nut butter: A few teaspoons of peanut butter, almond butter, or cashew butter for protein.
  • Sweetener: Add a touch of sweetness with maple syrup, honey, brown sugar, granulated sugar, or date paste.
  • Toppings: Fresh fruit like sliced bananas and berries, crunchy chopped nuts, cocoa powder or nibs, chia, and flax seeds provide extra flavor and nutritional boosts.
Fresh blueberries, raspberries, and sliced strawberries topped on a bowl of oatmeal.

Recipe Science

Make a little or make a lot

The bonus of using an Instant Pot is that you can seamlessly increase or decrease the amount of oats to suit your needs. You can add as little as ½ cup for a single serving (1 ½ cups cooked) or up to 3 cups (9 cups cooked) for a 6-quart capacity. Make sure that the pot is not filled past halfway to account for the expansion of the oats.

Instant Pot Steel Cut Oats

Cook perfect oats every time! Instant Pot steel cut oats are a quick and healthy breakfast made in about half the time compared to the stovetop method.
4.84 from 6 votes
Prep Time5 minutes
Cook Time30 minutes
Total Time35 minutes
Servings 6 cups
Course Breakfast
Cuisine American

Ingredients 
 

  • 2 cups steel cut oats
  • ½ teaspoon kosher salt
  • 6 cups water

Instructions 

  • Add Ingredients and Cover – In a 6-quart Instant Pot, add steel cut oats, salt, and water. Make sure that the release valve is in the "Sealing" position. Place the lid on, turn, and lock.
  • Pressure Cook the Oats – Press the "Manual" button on the Instant Pot on high pressure, and then set the timer to 6 minutes using the "+" or "-" buttons. It will take about 15 minutes for the pot to heat up and build pressure. You will see some steam release from the lid, and then the time will start on the display.
  • Release the Pressure – Once cooking time is complete, allow the pressure to naturally release for 15 minutes.
  • Open Lid – Use an oven mitt or towel to slowly and carefully twist the steam release handle on the lid to the "Venting" position. The initial release will spray moisture around the pot, so be careful. Remove the lid, opening the top away from you as steam will be released.
  • Absorb the Water – There will be some liquid on top, stir to incorporate. Allow the oats to sit for 10 minutes to completely absorb the water before serving.
  • To Serve – Ladle the oatmeal into bowls and top with fruits, crushed nuts, brown sugar, honey, or maple syrup. If the texture thickens up after sitting for a while, add a splash of milk.

Equipment

Notes

  • Adjusting Texture: For chewier oats, cook for 4 minutes under high pressure. For softer oats, cook for 8 minutes under high pressure. Keep the natural release time at 15 minutes, and sit time for 5 to 10 minutes.
  • For Creamier Oatmeal: Add up to 3 cups of dairy or plant-based milk to the recipe, plus 3 cups of water. Alternatively, add some milk to the hot oats right before serving.
  • Storing: Oatmeal can be portioned into smaller servings, cooled at room temperature, then covered and refrigerated for up to 4 to 5 days. Eating from a taste perspective is no longer suitable if water starts seeping out of the grains.
  • Freezing: Portion oatmeal out in single servings into quart-sized bags. These can be stored for up to 1 month. Defrost the night before in the refrigerator or place the bag in a warm water bowl until no longer frozen.
  • Reheating: Reheat oatmeal in a microwave on high power at 30-second intervals until warm. On the stovetop, cook over medium heat until warm. Add more milk or water as needed to adjust the consistency for both methods.

Nutrition Facts

Serves: 6 cups
Calories 206kcal (10%)Carbohydrates 35g (12%)Protein 9g (18%)Fat 4g (6%)Saturated Fat 1g (5%)Sodium 206mg (9%)Fiber 6g (24%)Calcium 34mg (3%)Iron 2mg (11%)

Percent Daily Values are based on a 2000-calorie diet. All nutritional information is based on estimated third-party calculations. Each recipe and nutritional value will vary depending on the brands you use, measuring methods, and portion sizes per household.

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Jessica Gavin

I'm a culinary school graduate, cookbook author, and a mom who loves croissants! My passion is creating recipes and sharing the science behind cooking to help you gain confidence in the kitchen.

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  1. Kelly Land says

    Have you ever used steel cut oats instead of rice to make chicken and rice? Rice has started to bother my stomatch and give me headaches, but not oats, so I thought I would try chicken and “oats” in the slow cooker. Do you think adding chicken and using bone broth would be ok?

    • Jessica Gavin says

      No, I haven’t used steel-cut oats for soups. It’s possible, but the grains won’t hold their shape like rice and will make it more viscous and cloudy in appearance. If you give it a try, let me know! You could test with bone broth and chicken.