Instant Pot Oat Groats – High Fibre Breakfast with Chia & Berries
Instant Pot oat groats are a simple, high-fibre breakfast with a chewy texture and nutty flavour. This easy pressure cooker method makes hearty oat groats porridge perfect for meal prep.
Instant Pot oat groats make a nourishing, high-fibre breakfast that keeps you full for hours. Because oat groats are the whole oat kernel, they cook into a hearty porridge with a pleasantly chewy texture and a naturally nutty flavour. The Instant Pot makes the process simple and hands-off, giving you a wholesome breakfast with almost zero effort.
What Are Oat Groats?
Oat groats are the whole oat kernel, with only the outer husk removed. Because they are the least processed form of oats, they keep all parts of the grain intact, including the bran, germ, and endosperm. This gives oat groats a slightly chewy texture and a mild, nutty flavour once cooked.
You can think of oat groats as the starting point for all other types of oats.
Oat Groats vs Steel Cut Oats
Steel cut oats are simply oat groats that have been chopped into smaller pieces. Because they are cut, steel cut oats cook faster and create a creamier porridge. Oat groats stay more intact when cooked, giving them a firmer, chewier texture that is closer to grains like barley or farro.
Oat Groats vs Rolled Oats
Rolled oats start as oat groats that producers steam and flatten into flakes. This process helps them cook quickly, which makes them popular for oatmeal. Oat groats undergo less processing and keep their natural structure, giving them a heartier whole grain texture.
Health Benefits of Oat Groats
Oat groats are a minimally processed whole grain, so they retain more of their natural nutrients than refined oat products. The intact kernel provides a good balance of complex carbohydrates, fibre, and plant-based protein.
Beta-Glucan
Oat groats are rich in beta-glucan, a type of soluble fibre found naturally in oats. Beta-glucan has been studied for its ability to help support healthy cholesterol levels and promote heart health. It also contributes to the creamy texture oats develop when cooked.
High in Fibre
As a whole grain, oat groats contain a significant amount of dietary fibre, which supports digestive health and helps promote satiety. Meals rich in fibre tend to keep you full longer, making oat groats a satisfying breakfast option.
Blood Sugar Stability
Because oat groats digest more slowly than refined grains, they can help support more stable blood sugar levels. Their combination of fibre and complex carbohydrates leads to a slower release of energy, which may help reduce rapid spikes and crashes in blood sugar.
Why Cook Oat Groats in the Instant Pot
Cooking oat groats in the Instant Pot is one of the easiest ways to prepare this hearty whole grain. The pressure cooker turns a slow-cooking grain into a simple, hands-off breakfast.
- Hands-off cooking – Once the ingredients are in the pot, the Instant Pot does the work for you.
- Better texture – Pressure cooking softens the oat groats while keeping their pleasant chewy bite.
- Great for meal prep – Cook a batch once and store portions in the fridge for quick breakfasts during the week.
Ingredients
This simple Instant Pot oat groats recipe uses just a few wholesome ingredients.
- Oat groats – The whole oat kernel, which cooks into a chewy, nutty porridge.
- Water – Forms the base cooking liquid and helps the groats soften evenly.
- Milk – Adds creaminess and a richer flavour to the finished porridge.
- Chia seeds – Provide extra fibre and help thicken the oats slightly.
- Berries – Fresh or frozen berries add natural sweetness and colour when serving.
- Cinnamon – Adds gentle warmth and depth of flavour that pairs well with the oats and berries.
Liquid Ratio for Oat Groats
For this recipe, use about 700–800 ml of liquid for every 200 g of oat groats. This amount gives a porridge-like consistency when cooked in the Instant Pot. Because oat groats stay intact and release less starch than rolled oats, some liquid will remain around the grains rather than being fully absorbed.
You can adjust the liquid depending on your preferred consistency:
- 650 ml liquid per 200 g groats – thicker oats with more chew and less surrounding liquid
- 750–800 ml liquid – balanced porridge texture
- 850–900 ml liquid – softer oats with more broth-like liquid
The liquid can be all water or a mixture of water and milk, depending on how creamy you want the finished oats.
How to Cook Oat Groats in the Instant Pot
Rinse the oat groats
Place the oat groats in a fine mesh sieve and rinse briefly under cold water to remove any dust or debris.
Add ingredients to the Instant Pot & Pressure cook
Add the rinsed oat groats, water, milk, salt, and cinnamon (if using) to the Instant Pot. Stir once to combine.
Secure the lid and set the valve to sealing. Cook on High Pressure for 20 minutes
Natural pressure release
Once the cooking time is complete, allow the pressure to release naturally for about 15 minutes, then release any remaining pressure.
Open the lid and stir the oat groats well. The mixture will thicken slightly as it cools.
Add chia seeds
Stir in the chia seeds and allow the oats to sit for 3–5 minutes so the chia can absorb some liquid.
Serve
Spoon the oat groats into bowls and top with berries and any additional toppings you like, such as nuts, yoghurt, or maple syrup.
Topping Ideas
Cooked Instant Pot oat groats make a great base for a variety of toppings. You can keep things simple or turn them into a more filling breakfast bowl.
- Berries – Fresh or frozen berries add natural sweetness and a bright, slightly tart flavour. Blueberries, raspberries, and strawberries all work well.
- Nuts – Chopped almonds, walnuts, or pecans add crunch and healthy fats that help make the breakfast more satisfying.
- Nut Butter – A spoonful of peanut butter, almond butter, or cashew butter melts into the warm oats and adds richness.
- Yoghurt – Greek yoghurt or skyr adds creaminess and extra protein, making the oats more balanced and filling.
Meal Prep & Storage
Oat groats are well suited for batch cooking and hold their texture better than most other types of oats.
Fridge
Store cooked oat groats in an airtight container in the refrigerator for up to 5 days. They are ideal for preparing several breakfasts in advance.
Freezer
Portion cooled oat groats into individual containers or freezer bags and freeze for up to 3 months. Freezing in single servings makes them easy to reheat when needed.
Reheat
To reheat, warm the oats in a saucepan or microwave with a splash of milk or water, stirring occasionally until heated through. Add extra liquid as needed to loosen the texture.
Other Ways to Use Cooked Oat Groats
Although oat groats are often served as a warm breakfast porridge, they also work well as a savory whole grain in other dishes. Their chewy texture makes them a good substitute for grains like rice, barley, or farro.
- Grain bowls – Use cooked oat groats as a base for bowls topped with roasted vegetables, beans, greens, and a simple dressing.
- Salads – Chill the cooked groats and add them to salads with herbs, vegetables, and vinaigrette for extra texture and fibre.
- Pilaf-style side dish – Cook oat groats in vegetable broth instead of water and finish with sautéed mushrooms, garlic, or herbs.
- Soups and stews – Stir a handful of cooked oat groats into soups to add body and whole-grain nutrition.
Because cooked oat groats hold their shape well, they are easy to prepare in advance and add to meals throughout the week.
If you want to batch cook the instant pot oat groats and leave your options open, just omit the cinnamon from this recipe, and use only water as the liquid.
Instant Pot Oat Groats
Ingredients
- 200 g oat groats rinsed
- 550 ml water
- 200 ml milk dairy or plant-based
- ½ tsp sea salt
- ½ tsp ground cinnamon optional
- 2 tbsp chia seeds
- 150 g berries fresh or frozen
Optional Toppings
- chopped nuts
- nut butter
- Greek yoghurt or skyr
- maple syrup or honey
Instructions
- Rinse the oat groats in a fine mesh sieve under cold water and drain well.
- Add the rinsed oat groats, water, milk, salt, and cinnamon (if using) to the Instant Pot insert. Stir once to combine.
- Secure the lid and set the valve to sealing. Cook on High Pressure for 20 minutes.
- When cooking finishes, allow the pressure to release naturally for 15 minutes, then release any remaining pressure.
- Open the lid and stir the oat groats. The mixture will thicken slightly as it cools.
- Stir in the chia seeds and allow the oats to rest for 3–5 minutes so the chia can absorb liquid and thicken the porridge.
- Divide into bowls and top with berries and any optional toppings before serving.
Notes
Flavour variations
- Apple Cinnamon Oat Groats – Stir in diced apple during the last few minutes of cooking or add sautéed apple and extra cinnamon when serving. A drizzle of maple syrup works well here.
- Berry Almond Bowl – Top the cooked oats with mixed berries, toasted almonds, and a spoonful of almond butter for added richness and texture.
- Nutty Banana Oats – Add sliced banana and peanut butter just before serving. A small pinch of nutmeg pairs well with this variation.
Substitutions
- Milk – The milk can be replaced entirely with water or any plant-based milk. Using half milk and half water creates a creamier texture while reducing the risk of scorching in the pressure cooker.
- Chia seeds – If you don’t have chia seeds, flaxseed or hemp seeds can be stirred in after cooking for extra fibre and texture.
Storage
Cooked oat groats keep well in the refrigerator for up to 5 days in an airtight container. To reheat, add a splash of milk or water and warm gently on the stove or in the microwave.FAQs
Oat groats are the least processed form of oats, so they retain more of their natural fibre and nutrients. However, rolled oats and steel cut oats are still healthy whole grains. Because oat groats remain less processed, they digest more slowly and keep a firmer texture when cooked. As a result, they provide a more substantial and satisfying bowl of oats.
Yes, it’s a good idea to rinse oat groats under cold water before cooking. This helps remove any dust from processing and excess starch that could make the porridge slightly gummy.
Oat groats are the least processed form of oats, so they retain more of their natural fibre and nutrients. Rolled oats and steel cut oats are still healthy whole grains, but oat groats digest more slowly and keep a firmer texture when cooked.
Yes, oat groats can be cooked overnight using a slow cooker on low heat for 8–10 hours. This method creates a softer porridge that is ready in the morning.
Oat groats may turn mushy if they are cooked with too much liquid or cooked for too long. Using the correct liquid ratio and allowing the oats to release pressure naturally helps maintain a better texture.
