This Oreo Overnight Oats recipe is perfect for when you want dessert for breakfast or a sweet evening snack. The flavour is super decadent but it provides a variety of nutrients like protein, fibre and healthy fats to keep you feeling full and satisfied!

cookie overnight oats in a white ceramic dish topped with melted chocolate and cookie crumbs

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Why I love these Oreo Overnight Oats

If you have followed me on social media for any length of time you will likely know how much I love overnight oats. They have been part of my morning routine for several years and ultimately, have saved me countless hours in the kitchen. They also make an excellent protein-rich snack to tie me over in between meals!

If you have never made an overnight oats recipe, this is a great introduction! Overnight oats is the meal prep friendly version of oatmeal. It’s quick and easy to make and sets you up for a stress-free morning (at least when it comes to food).

I make a double batch 2-3 times per week so that my mornings are stress-free. There’s nothing as reassuring as knowing that a delicious breakfast is already made for the upcoming day. And to top it off, it only takes 5 minutes to prep.

They are prepped the night before so you save time in the morning. They provide a great source of protein, fibre and omega 3 fatty acids. Plus, they’re so versatile, the flavour combinations are endless! 

Overnight oats also make easy meal prep recipes. Just double or triple the recipe to prepare a few in advance so you don’t have to make them every night!

This Oreo Overnight Oats recipe is incredibly delicious while still being extremely simple to make. In addition to the base recipe, you only need 2 other ingredients! If needed, you can also make a variety of adjustments and substitutions, depending on your preferences. 

 

Ingredients needed

Here’s what you need to make these easy overnight oats:

  • Oats
    • I prefer using large flake oats for overnight oats because they hold the texture better.
    • See alternative oat options below.
  • Chia seeds
    • These gel up when they are mixed with liquid and they add some volume and extra nutrients to the recipe.
  • Plain or vanilla Greek yogurt
    • I recommend using Greek yogurt because it’s thicker and provides significantly more protein compared to regular yogurt.
  • Milk
    • Milk makes this meal creamy and offers additional protein, fats, calcium and other nutrients.
    • Use your preferred choice of milk or plant-based beverage.
  • Oreo cookies
    • There are so many different kinds of Oreos so choose whichever you like best!
  • Chocolate chips
    • These will be melted and used as a chocolate drizzle.

three overnight oats base recipe each in glass containers on top of a marble serving platter

Optional ingredients

You might not be a fan of some of the recommended ingredients in this recipe. Or maybe you don’t have access to them. Perhaps you just want to add your own personal twist to it! Here are some suggested alternatives:

  • Quick oats or old fashioned rolled oats
    • If you don’t have large flake oats you can substitute quick or rolled oats instead. I recommend reducing the milk by 1-2 tbsp so that it’s not too liquidy or mushy.
  • Flavoured Greek yogurt
    • If you prefer a different flavoured Greek yogurt, you can use this in place of the plain Greek yogurt in this recipe. If you’re looking for a flavoured yogurt, I recommend vanilla or strawberry flavoured yogurt.
  • Regular yogurt
    • Instead of Greek yogurt, you can use regular yogurt. However, this tends to be more liquidy than Greek yogurt so I recommend reducing the milk by 1-2 tbsp.
  • Alternative milks
    • If you are looking for a higher protein option, I recommend using dairy milk or soy milk. Other plant-based beverages like oat milk or almond milk will still work in this recipe but provide much less protein.
  • Nut or seed butters
    • If you want to go Parent Trap style, add a dollop of peanut butter (or another nut or seed butter) for a delicious flavour combination!
  • Protein powder
    • If you want to add an extra boost of protein to overnight oats, you can use protein powder. I recommend adding a small amount to start with to make sure you enjoy the taste and texture. 
    • If you need help choosing the best protein powder for you, check out my blog posts on this topic here and here.
  • Maple syrup, honey, vanilla extract, coconut flakes
    • Add any of these ingredients to increase the sweetness of this breakfast.

 

How to make Oreo Overnight Oats

All you have to do to prepare these Oreo Overnight Oats is:

  1. In a sealable jar or container, mix the oats, chia seeds, Greek yogurt and milk together. Stir well.
  2. Place the mixture in the fridge for at least 1 hour, ideally overnight.
  3. When you’re ready to eat, add a drizzle of melted chocolate and the chopped Oreos. Stir and enjoy!

 

Tip: My favourite containers to store overnight oats in are mason jars or other glass jars with a tight lid. I have reused empty nut butter and salsa jars for this recipe. You just have to make sure to give them a good wash beforehand (especially the salsa jar)!

 

Personalize Your Overnight Oats

To make these Oreo Overnight Oats your own, you may want to jazz it up even more. Here are some optional add-ins that you could consider:

  • To add extra crunch and protein: top with granola, sliced almonds, chopped walnuts or pecans, pumpkin seeds, hemp seeds or extra chia seeds.
  • To achieve a richer flavor, add a spoonful of nut or seed butter.
  • For extra creaminess use a higher fat percentage Greek yogurt or milk.
  • If you need some extra sweetness drizzle a bit of maple syrup, honey or your choice of sweetener.
  • To save time and energy by making a double or triple batch in a large bowl and just scoop and go in the morning. Work smarter, not harder!

Whatever way you prepare it, I hope you love it!

overhead shot of oreo overnight oats in a white ceramic dish topped with melted chocolate and oreo crumbs

Why add chia seeds to overnight oats?

Adding chia seeds to the oat mixture helps with the texture and the nutrient profile of this breakfast. When chia seeds are combined with liquid, they soak it up quite easily. This creates a gel-like texture that pairs really well with oatmeal and prevents the final product from being too liquidy.

Chia seeds are also incredibly nutrient-dense. They provide an excellent source of omega 3 fatty acids, fibre and plant-based protein. Don’t forget to add these to your overnight oats!

 

What kind of milk is best for overnight oats?

I highly recommend using any type of milk in overnight oats instead of water.

Milk makes this breakfast super creamy. It also provides additional protein, fats, calcium and other nutrients. When I make overnight oats I aim to make them as filling and satisfying as possible. For this reason, I opt for a milk that’s rich in protein so it keeps me full for longer.

My favourite protein rich milk options are dairy and soy milk. If you follow a plant-based or vegan diet, opt for soy milk!

If you are not lactose intolerant and can digest dairy milk just fine, I recommend 2% milk. This extra bit of fat (compared to skim or 1%) can make the oat mixture a little bit creamier and it helps us absorb fat soluble vitamins (vitamins A, D, E and K)!

Depending on the consistency of the milk you have, you may need to adjust the amount used. I have found that you need less dairy milk to achieve the same texture, compared to if you were using soy milk, for example. I have provided these recommendations in the recipe.

 

How much time do overnight oats need to soak?

You only need 5 minutes to prepare these breakfast meal prep overnight oats. To achieve the best texture of overnight oats, it is recommended to allow for enough time for the oats and chia seeds to soak up all of the liquid. This takes at least 1 hour in the fridge but ideally the mixture is left overnight (for at least 6 hours). 

 

What is the texture of overnight oats?

The final texture of overnight oats should be thick and creamy.

  • If you want to make the mixture thicker, reduce the amount of milk by 1-2 tbsp.
  • To make the mixture more liquidy, add an additional 1-2 tbsp of milk. 

If the mixture is really runny or liquidy after it has set then you have added too much milk. You can add extra oats or chia seeds to help soak up the excess liquid.

overhead shot of oreo oats in a white ceramic dish topped with melted chocolate and oreo crumbs

Overnight oats nutrition

As a dietitian, I like to make sure that my recipes are quick and easy to make while also being absolutely packed with nutrients!! I have broken down the nutrition information for each base ingredient.

  • Large flake oats: Per 1/3 cup, there are 3 grams of fibre, 4 grams of protein and 8% of daily value of iron.
  • Chia seeds: Per 1 tbsp, there are 3.5 grams of fibre, 2 grams of protein, over 100% of daily omega 3s and a variety of minerals.
  • Greek yogurt: Per 1/3 cup, there are 7 grams of protein and 7% of daily calcium.
  • Milk (dairy or soy): Per 2/3 cup of 2% dairy milk, there are 5 grams of protein, 15% of daily calcium, and significant amounts of vitamin B2, B12 and K.

 

As you can see, the base recipe of overnight oats is extremely nutrient dense.

If you would like to add an extra boost to the protein content, you can always add in 1-2 tbsp of unflavoured or vanilla or chocolate protein powder to make protein overnight oats!

 

Dietary considerations

This recipe is already nut free. Here are some ways to accommodate a variety of other dietary restrictions:

  • To make the base recipe gluten free, make sure you opt for gluten free oats and gluten free Oreos!
  • To make it dairy free or vegan, choose plant-based yogurt like soy, almond or oat milk instead of dairy milk. Oreos are vegan!

 

How long do overnight oats last for?

I get a lot of questions about how many batches of overnight oats you can make at one time and how long you can keep them in the fridge. Typically, I make enough for 2 breakfasts and store them in the fridge in airtight containers. However, there have been times when I have skipped a day of having them and end up eating a batch 3 days after I made them. They have always stayed fresh and delicious for that duration.

As long as you store the overnight oats in an airtight container or jar in the fridge, they can last up to 3-4 days without any changes in the taste or texture.

If you prefer to try them by making a batch for 1 morning, that’s a great start. I’m confident you will be making more for the following day once you get to taste this recipe!

I recommend holding off on adding the toppings until you’re ready to eat it because they can get soggy in the fridge overnight.

 

More overnight oats recipes

I hope these Oreo Overnight Oats are the best start or end to your day, depending on when you decide to enjoy them! Don’t forget to check out some of these other overnight oats variations:

oreo overnight oats in a white ceramic dish topped with melted chocolate and oreo crumbs

I hope you love these Oreo Overnight Oats. If you make them, I would love to see your comment and rating below. It also makes my day seeing your creations of my recipes on Instagram- don’t forget to tag @allnutrition.rd!

oreo overnight oats in a white ceramic dish topped with melted chocolate and oreo crumbs

Oreo Overnight Oats

The perfect recipe for when you want dessert for breakfast or a sweet evening snack.

Ingredients
 

  • cup large flake oats
  • 2 tbsp chia seeds
  • cup plain or vanilla Greek yogurt
  • 1 cup dairy milk, or 1 ⅓ cup plant-based alternative
  • 3 tbsp chocolate chips
  • 3 Oreo cookies, chopped

Instructions
 

  • In a sealable jar or container, mix the oats, chia seeds, Greek yogurt and milk together. Stir well.
  • Place the mixture in the fridge for at least 1 hour, ideally overnight.
  • Right before you're ready to eat, place the chocolate chips in a microwave-safe bowl and microwave on high in 20 second intervals. Stir in between each interval and continue this pattern until they are melted.
  • When you're ready to eat, add the drizzle of melted chocolate and the chopped Oreos. Stir and enjoy!

Notes

Substitutions

  • Quick oats or old fashioned rolled oats
    • If you don’t have large flake oats you can substitute quick or rolled oats instead. I recommend reducing the milk by 1-2 tbsp so that it’s not too liquidy or mushy.
  • Flavoured Greek yogurt
    • If you prefer a different flavoured Greek yogurt, you can use this in place of the plain Greek yogurt in this recipe. If you’re looking for a flavoured yogurt, I recommend vanilla or strawberry flavoured yogurt.
  • Regular yogurt
    • Instead of Greek yogurt, you can use regular yogurt. However, this tends to be more liquidy than Greek yogurt so I recommend reducing the milk by 1-2 tbsp.
  • Alternative milks
    • If you are looking for a higher protein option, I recommend using dairy milk or soy milk. Other plant-based beverages like oat milk or almond milk will still work in this recipe but provide much less protein.
  • Nut or seed butters
    • If you want to go Parent Trap style, add a dollop of peanut butter (or another nut or seed butter) for a delicious flavour combination!
  • Protein powder
    • If you want to add an extra boost of protein to overnight oats, you can use protein powder. I recommend adding a small amount to start with to make sure you enjoy the taste and texture. 
  • Maple syrup, honey, vanilla extract, coconut flakes
    • Add any of these ingredients to increase the sweetness of this breakfast.
 

Dietary restrictions

This recipe is already nut free.
Gluten free: make sure you opt for gluten free oats and gluten free Oreos!
Dairy free: choose plant-based yogurt and milk like soy, almond or oat milk instead of dairy milk. Oreos are dairy free!
Vegan: choose plant-based yogurt like soy, almond or oat milk instead of dairy milk. Oreos are vegan!