Overnight Oats In A Jar

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Taking five minutes before bed to make these Overnight Oats In A Jar means you’ll have a nourishing breakfast ready on waking. It’s a choose your own adventure breakfast with the toppings too! Once the base is made, you can top them with anything you like.


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What Makes This Recipe So Good?

Oats contain a soluble fibre called beta glucan, which can help to lower cholesterol, blood pressure, and blood sugar as well as improve insulin sensitivity. Beta glucan also supports gut health by balancing the gut microbiome, and the presence of various vitamins, minerals, and antioxidants also make oats great for immune health. Then there’s the cinnamon, which is great for keeping blood glucose levels in check and sweet cravings at bay.

Ingredients You’ll Need To Make These Overnight Oats

This recipe requires nothing but a few basic ingredients. All you need to do is toss it all in a couple of jars, mix it up and pop it in the fridge. Come the morning add your toppings of choice and you’re good to go.


I’ve used peanut butter in this recipe but even that can be changed if you’d like something else. Both almond and cashew butter are also delicious.

  • Oats – serve as the base for the recipe, providing a hearty and nutritious foundation.
  • Almond milk – this was simply my preference. Any milk of your choosing can be used in the same quantity.
  • Maple syrup – adds a touch of sweetness with a touch of caramel and toffee flavours. A great combination with the oats and cinnamon.
  • Peanut butter – enhances the creaminess of the oats along with adding a good dose of healthy fats and protein. This helps keep you satiated.
  • Banana – provides natural sweetness and a creamy texture along with a host of vitamins and minerals like potassium, vitamin C, and fibre. It also contributes to one of your fruit servings for the day!
  • Cinnamon – imparts a warm and aromatic flavour spice while contributing depth and complexity to the overall taste of this delicious breakfast dish.
  • Toppings of choice – I’ve used raspberries, choc chips, and granola in this version.

This really is a versatile and forgiving recipe. The ratio of oats to milk is the only thing that needs to remain as is. That aside experiment with any toppings or spices you’d like to create a different breakfast every time you make this. I’ve swapped out the cinnamon for my homemade pumpkin spice mix before, which was divine.

How to make overnight oats

If you prefer you can of course mix this all in a big bowl then transfer it to the jars. I just like as little clean up as possible!

  1. Pour half the oats, cinnamon, and milk into one jar, then the other half into another. Also add the sweetener here if you’re using any.
  2. Mix until they’ve taken on a nice cinnamony colour overall.
  3. Mash the banana and peanut butter (or the nut butter of your choosing) together until it’s like a thick paste.
  4. Add half the banana/nut butter mix to each jar and stir again to combine.
  5. Chill in the fridge overnight then choose your own adventure on the toppings in the morning. It can be anything at all that you like. I went with strawberries, raspberries, chocolate chips, granola and some maple syrup for this recipe.

If you’re not a banana lover try mashing berries, ripe pear, or you could even use apple puree. If doing that I’d suggest mixing ¼ cup with the peanut butter before adding that to the oats. That will give you apple and cinnamon oats, which would be just as delicious!


These jars will easily keep in the fridge for a couple of days but may firm up slightly. If this happens, just add a touch more milk and mix it through before you add the toppings.

This recipe is not suitable for freezing.


How long should overnight oats sit?

Oats can be quite tough to digest when raw and still firm due to the starch they contain. As such, it’s important to ensure they soak up plenty of liquid to soften up. The longer they soak, the more this starch will break down making the oats more digestible and easier on the gut. 2-3 hours would be the absolute minimum but overnight is best.

Are overnight oats eaten hot or cold?

They’re eaten straight from the fridge – so, cold. If you’re after something more warming porridge is the way to go.

Why did my overnight oats not work?

It was likely too little or too much milk. ¾ of a cup of oats will need roughly ½ a cup of milk. It could take a touch more if you’d like the overnight oats less firm. But too much and they’ll be swimming in liquid in the morning.

Do you add fruit to overnight oats before or after?

You can do either. I’ve added banana to the base mix because this makes the oats extra creamy. If you skip on that, simply add a bit of fruit to the jars before serving.

More breakfast recipes to try!

If you try this recipe, I’d love to know. Leave a comment, rate it, and remember to tag @wholenaturalkitchen in your pics or reels on Instagram, Facebook or TikTok!


Overnight Oats in a Jar

These overnight oats take five minutes prep before bed, then you'll have a nourishing breakfast ready for you on waking.
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Course: Breakfast
Cuisine: Australian
Keyword: Dairy free, Oats, Overnight oats
Prep Time: 5 minutes
Chilling time: 8 hours
Total Time: 8 hours 5 minutes
Servings: 2 people
Calories: 424kcal



  • 1.5 cups rolled oats
  • 1 cup almond milk (or your milk of choice)
  • 2 tbsp peanut butter (smooth or crunchy is fine)
  • 1 medium ripe banana, mashed (this is optional but makes the oats even more creamy and delicious)
  • ½ tsp cinnamon
  • 1 tbsp maple syrup
  • Extra toppings of your choice. I used strawberries, raspberries, chocolate chips, granola and a drizzle of maple syrup.


  • Place half the oats, almond milk and cinnamon into one jar and the other half of these ingredients into another. Stir each to combine.
  • Mash the peanut butter and banana together, then place half in each jar
  • Stir all ingredients in each jar well, then put a lid on both and place them in the fridge overnight
  • Decorate the top of the oats with your toppings of choice and a little extra drizzle of maple syrup or honey the next morning before serving then enjoy!



You can use any nut butter you like here, it doesn’t have to peanut butter. You can also add your toppings of choice. Some suggestions I mentioned in the post above for fruit are berries, passionfruit or even stewed apple or pear.
See the FAQ above for other hints and tips to help you make the perfect overnight oats every time.


Serving: 1jar | Calories: 424kcal | Carbohydrates: 66g | Protein: 13g | Fat: 14g | Saturated Fat: 2g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 6g | Sodium: 236mg | Potassium: 546mg | Fiber: 9g | Sugar: 16g | Vitamin A: 39IU | Vitamin C: 5mg | Calcium: 208mg | Iron: 3mg

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A jar filled with overnight oats is topped with berries and choc chips.Pin

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