Can You Heat Up Overnight Oats, Or Should You Leave Them Cold? (2024)

Why are overnight oats so popular? How to Heat Overnight Oats Heating using microwave: Heating using stovetop: How To Store And Reheat Overnight Oats Storing Overnight Oats: Reheating Overnight Oats: What Happens To Oats When Heated? Why Protein Oatmeal Is a Great Breakfast Frequently Asked Questions (FAQs) Can I heat overnight oats? Does the texture change when heated? What are the benefits of heating overnight oats? Are there any risks to heating overnight oats? Is it safe to eat oatmeal left out overnight? How long until overnight oats go bad? Can I use a stove to heat up overnight oats? Is microwave cooking better than cooking on a stove? Conclusion


It's a cold morning and you've got overnight oats prepared for breakfast. The idea of enjoying them warm sounds appealing, right?


While overnight oats are usually enjoyed as a cold breakfast, thankfully, there is no reason you can't enjoy your overnight oats warm.


Simply microwave them or warm them on a stovetop. If you're using a stovetop to warm them, make sure to add more liquid to your oats to avoid makin' a mess.


In this guide. we'll cover everything you need to know about heating your overnight oats and many different ways you can enjoy them.

Why are overnight oats so popular?

Overnight oats have become a common breakfast meal because they're quick and easy to make and contain high natural protein and fiber content that stimulates metabolism.


They're made by placing oats and other ingredients, like milk, yogurt, honey, and maple syrup into a jar and soaking them in liquid overnight.


Another important reason people love them is their flexibility. You can add different ingredients to enhance the flavor and texture. Some popular choices are fruits, nuts, seeds, honey, and spices like cinnamon or vanilla extract.


In the morning, you'll have a ready-to-go meal that you can enjoy straight out of the fridge or heat them up if that's what you like.

Can You Heat Up Overnight Oats, Or Should You Leave Them Cold? (1)

How to Heat Overnight Oats

There are two different methods you can use to heat up overnight oats: microwave or stovetop.

Heating using microwave:

1. Make sure you're using a microwave-friendly bowl or jar.

2. Add a splash of milk or water to the oats. This will help prevent them from drying out during the heating process.

3. Give your oats a good stir to break up any clumps.

4. Place the bowl in the microwave and heat on high for 1 minute. Stir the oats halfway through to evenly heat each part.

5. Microwave in 30-second intervals and stir between until you reach your desired warmth. If you notice any bubbling, stop immediately.

6. Let them sit at room temperature for a few minutes, so they thicken up.

7. Add your favorite toppings


Remember, the amount of liquid you add determines the texture of the warm oatmeal

Heating using stovetop:

1. Pour a liquid, like water or milk, into a saucepan and heat over medium.

2. When the liquid slightly boils, add overnight oats and reduce the heat to low.

3. Stir constantly until they're warm enough for you. Make sure not to burn them in the process.

4. Cover with your favorite toppings and enjoy.

How To Store And Reheat Overnight Oats

If you're not hungry enough to finish your overnight oats and want to save them for later, it's important to properly store them to maintain quality and taste.


Most overnight oats recipes can typically be stored in the fridge for up to 4-5 days. However, it's best to check for any signs of spoilage before consuming them.


Proper storage and reheating techniques are essential to maintain the quality and safety of overnight oats. Here's how you can store your overnight oats and reheat them when you're ready to enjoy them.

Storing Overnight Oats:

1. Use airtight containers : Transfer your prepared overnight oats into airtight containers to keep them fresh.

2. Refrigerate : Place the containers of overnight oats in the refrigerator as soon as possible. This helps prevent the growth of bacteria and ensures the oats stay safe to eat.

Reheating Overnight Oats:

You can reheat your overnight oats even if you've heated them up before. However, each time you reheat them, the oats go through a temperature danger zone (between 40°F and 140°F) where bacteria multiply.


To minimize any potential risks, make sure to heat them up to 165°F and not leave them out at room temperature for more than 2 hours total.


Multiple reheating can affect the texture, taste, and quality of your oats. They might become too mushy or lose flavor. While there isn't a specific limit on how many times you can reheat them, it's best to keep the limit 1-2 times.

What Happens To Oats When Heated?

1. Softening - Oats swell up and absorb water when heated, which gives a softer texture.

2. Protein change - Proteins, when exposed to heat, slightly change their molecular structure.

3. Nutrient Impact - Some nutrients in oats, like vitamin C, get destroyed to some extent, regardless of the heating method you use.

Why Protein Oatmeal Is a Great Breakfast

Adding protein to your oatmeal is a great way to improve the taste and get a decent amount of protein that will give you energy throughout the day.


You may already be eating oatmeal for breakfast, but if you’re still hungry after breakfast, you should try adding some protein to the mix.


Starting your day with a high-protein breakfast can improve your exercise performance, boost your mood, and keep you full for a long time.


Pea and rice protein helps burn fat and tone muscle, is easier to digest, and has plenty of iron. That’s why we use those 2 types of protein in our premade protein oatmeal packs.


Protein oatmeal packs are a quick and easy way to get a healthy and protein-full breakfast in a couple of minutes. A great solution for a busy morning.

Frequently Asked Questions (FAQs)

Can I heat overnight oats?

Yes, you can absolutely heat up your overnight oats without risking losing quality or taste. There is no reason you can't warm your overnight oats. Heated overnight oats are a cozy and satisfying breakfast, especially in the colder months.

Does the texture change when heated?

When cooked, oats absorb liquid, which means the texture will change.

If you want to get a rich and creamy texture on your freshly cooked oatmeal, then you should pour milk or water in the oatmeal during the cooking process.

What are the benefits of heating overnight oats?

Heating up your overnight oats allows you to change the texture by adding liquid, making them softer and easier to eat. Plus, the heat can enhance the flavors and aromas of the ingredients.

Are there any risks to heating overnight oats?

If you overheat the oats, they might become mushy and lose flavor.

There's also a risk of adding too much or too little liquid while heating, which can change the texture.

Is it safe to eat oatmeal left out overnight?

It's generally not recommended to leave overnight oats at room temperature for more than 2 hours. This is because oatmeal can easily spoil and become contaminated with bacteria if left out for too long.

How long until overnight oats go bad?

If you store overnight oats in an airtight jar and place them in the refrigerator, they can last for up to five days without spoiling or losing quality. However, it's best to check for any signs of spoilage before consuming them.


If you're a fan of warm overnight oats and want to reheat them multiple times, it's best to heat them to 165°F and limit reheating to 1-2 times maximum.

Can I use a stove to heat up overnight oats?

Yes, if you prefer using a stove instead of a microwave, you can heat up your overnight oats on the stovetop. Simply transfer the oats to a saucepan and warm them over low to medium heat, all while consistently stirring.

Is microwave cooking better than cooking on a stove?

Yes, microwaving oats is faster and preserves more heat-sensitive nutrients. It may make certain nutrients, like carotenoids , more available to the body, and help with the digestion of vitamin B.


When done properly, microwave cooking is one of the least damaging ways to cook nutrients.

Conclusion

Heating overnight oats is a great way to enjoy a warm and comforting breakfast option. Whether you choose the microwave or stovetop method, be cautious not to overheat and compromise the texture or nutrient content. Experiment with different heating times and flavor combinations to find your perfect bowl of warm overnight oats.

Can You Heat Up Overnight Oats, Or Should You Leave Them Cold? (2024)

FAQs

Can You Heat Up Overnight Oats, Or Should You Leave Them Cold? ›

While overnight oats are usually enjoyed as a cold breakfast, thankfully, there is no reason you can't enjoy your overnight oats warm. Simply microwave them or warm them on a stovetop. If you're using a stovetop to warm them, make sure to add more liquid to your oats to avoid makin' a mess. In this guide.

Do you heat overnight oats or eat them cold? ›

Overnight oats do not have to be eaten cold. I prefer my oats warm, so I warm them in the microwave before I get ready to eat them.

How long can overnight oats stay out of the fridge? ›

Whether mixed in with the oats or alone, it should not remain out of the fridge for longer than two hours at the most. If the milk stays at room temperature for longer than this (or even a shorter amount of time if temperatures are hotter), bacteria can start growing.

Is it safe to eat oatmeal left out overnight? ›

If not refrigerated and left at room temperature, bacteria can start to grow in cooked oatmeal, which is a concern for food safety. As such, any cooked oatmeal left outside of the fridge for 2 or more hours should be considered as expired, and consequently, put in the trash.

Is it okay to eat overnight oats every day? ›

Overnight oats are perfectly safe to be eaten every day. You may even eat them every morning if you like. However, some say that they feel oats give them digestive issues; overnight oats are not unsafe for those without medical conditions that affect digestion.

What is the best way to eat overnight oats? ›

Warm it up if you prefer warm oats in the morning. Although overnight oatmeal is typically served cold, you can definitely eat them warm. Just place them in the microwave for one minute and be sure to use a microwave-safe jar.

What not to add in overnight oats? ›

Here's what not to do when making overnight oats.
  1. Using water instead of milk. ...
  2. Forgetting to add salt. ...
  3. Using instant or steel cut oats. ...
  4. Adding berries to your oats at night. ...
  5. Not stirring your overnight oats. ...
  6. Forgetting to add spices and seasonings. ...
  7. Omitting nuts and seeds. ...
  8. Assuming you have to eat it cold.
Oct 21, 2023

How healthy are overnight oats? ›

Overnight oats offer a range of health benefits, due to their rich fibre and protein content. They also contain a number of vitamins and minerals, some of which include manganese, phosphorus, magnesium, copper, iron and zinc. This makes overnight oats healthy for your gut, as well as for overall health and well-being.

Are overnight oats healthier than cooked oats? ›

Soaking the oats overnight reduces the phytic acid content present in the oats better than cooking them. Phytic acid is an antioxidant naturally present in grains, legumes, tubers and certain vegetables.

Why did my overnight oats not work? ›

If you don't add enough liquid, your oats will be dry and clumpy in the morning, making them less enjoyable to eat. Make sure to add enough milk or yogurt to fully cover your oats and give them a creamy consistency.

Why are my overnight oats slimy? ›

It's normal if your overnight oats are slightly slimy. Oats become “slimy” when they sit overnight because the starches in the oats release liquid over time. To avoid unappetizing, slimy oatmeal, stick to the 1:1 ratio.

Why are my overnight oats so watery? ›

Try adjusting the liquid until the oats reach your desired consistency. If the product is too soupy, try decreasing the amount of milk used on the next cup or adding yogurt. If the product is too dry/clumpy, try adding more milk.

What is the secret to overnight oats? ›

Add Twice as Much Milk as Oats

Whether you prefer whole milk, rice milk or coconut milk, you can use it. Just make sure to add twice as much milk as oats. Note: You can also use whey, buttermilk or thinned yogurt for a tangier flavor.

Can I warm up overnight oats? ›

The idea of enjoying them warm sounds appealing, right? While overnight oats are usually enjoyed as a cold breakfast, thankfully, there is no reason you can't enjoy your overnight oats warm. Simply microwave them or warm them on a stovetop.

What is the best container for overnight oats? ›

Ball Mason Jars are a classic choice for preparing overnight oats, and as an added bonus, they're generally inexpensive to buy. These 8-ounce versions come in a pack of two for just $10, but you can also buy sets of 12 jars if you want to stock up.

Is it better to eat overnight oats or hot oats? ›

Additionally, overnight oats retain more of their natural nutrients since they are not exposed to high heat during the cooking process. Cooked oats, on the other hand, have a higher glycemic index compared to overnight oats. This means they may cause a more rapid increase in blood sugar levels.

Do you heat or cold rolled oats? ›

A popular breakfast favorite, oat flakes can be enjoyed cooked or raw. This means that you can either boil them, as when preparing oatmeal or porridge, or enjoy them cold, such as by adding raw oats to shakes.

Do overnight oats taste like cold oatmeal? ›

What Do Overnight Oats Taste Like? Overnight oats taste a little different than regular oatmeal—for starters, they're cold. Cold oats might not seem like a comforting breakfast, but they're actually very refreshing in the warmer months. The soaked oats have a hearty flavor that pairs well with fresh fruit.

What's the big deal with overnight oats? ›

When you soak the oats overnight, it's almost like you're cooking them, but the process is much longer and slower, and it's done without heat. Hence, it is more nutrient rich than cooked version. Overnight oats contain increased resistant starch.

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