Cinnamon Overnight Oats (5 minutes prep!)

These cinnamon overnight oats are one of the easiest ways to wake up to a delicious, breakfast with little effort! These super creamy oats are prepped in just 5 minutes and left to sit in the fridge overnight. Gluten-free with a vegan option.

These high-protein overnight oats are really the best thing that has happened to my mornings of late. I prep them on Sunday night, and then I’ve got breakfast covered for the next few days. They also freeze great so you can fill your freezer full of ready-to-eat-foods making your week less stressed.

The best thing about overnight oats is not only that they taste great, but they retain even more nutrients and health benefits than cooked oatmeal.


  • Rolled oats or quick oats for a smoother texture – I used rolled oats in the photos. They add more bite and texture. People seem to normally use quick oats, which results in a creamier, smoother result.

    I always use rolled in mine, but if you’re new to overnight oats, you might want to go with quick (not instant!) oats as most people seem to prefer those.

  • Milk – I use cashew milk, but feel free to use whatever you like! If you’d like to use canned coconut milk, I’d recommend watering it down. So use 1/4 cup of canned coconut milk + 1/4 cup of water.

    And know that the oats will likely taste quite coconutty. I’m not sure if that’s the best thing for cinnamon-flavored oats.

  • Unflavored or vanilla protein powder OR chia seeds OR nothing – I like using protein powder in overnight oats to create more of a balanced meal. I don’t do well in the mornings (or ever) with just a bowl of carbs.

    If you don’t want to use protein powder, then you can use chia seeds. But you have to like the texture that chia seeds add.

    You can simply just omit the protein powder/chia, but then use 6 tablespoons of milk instead of 8. That’s because the powder/chia absorb quite a bit of liquid.

    I like my oats thick. If you don’t, then you can go ahead and use the 1/2 cup of milk.

  • Maple syrup – you could use a different type of sweetener, but I think maple goes best with cinnamon. You might need a tiny bit more milk if you choose not to use a liquid sweetener.

  • Ground cinnamon + vanilla extract

How to make cinnamon overnight oats

  1. Combine ingredients in a small bowl or jar.
  2. Cover and refrigerate overnight.
  3. Stir, add your favorite toppings and enjoy!

That’s it! It’s a hearty, nutritious, high protein and high fiber breakfast made with minimal effort! It takes only 5 minutes to prep the night before, and you’ll be waking up to a terrific breakfast.

This recipe is made for one, so if you’re making this for the whole family, just make individual servings for each person. It’s also a great make-ahead breakfast that you can make up to 5 days in advance.


  • If you use protein powder, I highly recommend using a good quality, reputable brand. Also, keep in mind the protein powder will flavor the oats strongly, so choose one that you like the taste of! I’ve listed some information on brands below so you can wade through the endless sea of protein powder with ease.

  • Different protein powders will absorb different amounts of liquid. If you find that they’re too dry in the morning, simply stir in more milk.

  • The more time overnight oats sit in the fridge, the more they’ll absorb liquid (up until a point). If you’re prepping for a couple of days in advance, you might want to add a little more liquid than if you were eating them the next day.

  • If the oats are dry, just add more milk when serving, but don’t overdo it. Soupy oats are not the consistency we are wanting here. Unless, of course, you like it that way then, by all means, go for it.

  • Don’t use plastic containers to store the oats. Plastic absorbs grease and smells from past food storage. It’s best to use glass, stainless steel, ceramic or porcelain bowls. If you have a glass jar with a lid, even better, as it will maintain freshness for a longer period of time

  • Be sure to stir just before eating. Oats at the bottom of the bowl will be slushier than the oats at the top, so if you give it a quick stir for a perfect creamy texture.


Overnight oats are so versatile, you can add your favorite fruit, berries, seeds or nuts – basically, anything you like can be added to these oats.

Yogurt is also a great way to add protein and creaminess. I wouldn’t combine it and store it overnight in the fridge because you will have a slime factor. Rather than mix it with the oats, just top off your bowl in the morning for the best results.

Berries and fresh fruit are also great additions. Diced apples would go well with the cinnamon and vanilla flavors, but this is something you should add the morning when you’re ready to eat the oats. Combining them from the start will cause them to oxidize and turn brown. The same goes for bananas.

Add-ins like nuts or seeds will absorb liquid and become spongy if you add them to refrigerate overnight. To avoid that, just add them when you’re ready to eat and have added crunch.

You can use fresh, frozen or even dried fruit. Fresh is great to add in the morning, frozen berries can be defrosted in the fridge overnight then added to the oats. And you can mix in dried fruit from the start if you want them to plump up a bit.

And if you love peanut butter, try this PB2 Overnight Oats recipe. It’s made with peanut butter powder (or regular peanut butter) and is super delicious!

And if you’re reading this in the fall, why not try some Pumpkin Baked Oatmeal?

Overnight oats protein powder

If you don’t want to use protein powder in these, I understand. I think most brands of protein powder are quite gross, as are the ingredients. One that works for me is Paleo Thin® Grass-Fed Beef Protein Vanilla Nut.

Beef protein probably sounds awful, I know, but there’s zero beef taste and the flavor is great.

For my vegan readers, I found and tried a vegan option – Dr. Murray’s Super Foods 3 Seed Vanilla Protein Powder. It’s just as tasty in these oats!

I’ve also tried these oats with another vegan option – Vega Brand vanilla protein powder. It was smooth without any grit and tasted great. I compared it to their chocolate protein powder and noticed the chocolate absorbed more moisture than the vanilla.

This article ranks the best-tasting protein powders in 2022. It’s a glance to help you navigate the extensive amount of protein powders that can be found. Plus, it shows a price range and where you can find the best-tasting brands.

If you don’t like the ingredients in any brand of protein powder, you can simply omit it or use a tablespoon of chia seeds.

If you’re looking for other ways to use protein powder, check out these Protein Brownies! They’re ultra fudgy and are a great treat. They’re gluten-free and dairy-free with a paleo option.

I also love waking up to this Chocolate Avocado Smoothie! It has loads of plant-based protein and is another great way to start your day. It’s naturally gluten-free with paleo and vegan options.

Are oats gluten-free?

They are naturally gluten-free, but if you are gluten sensitive, you’ll want to read this article on Are Oats Gluten-free?

Want to learn more?

Since most people just want the recipe, I’ve made several different posts on all things overnight oats so that people don’t have to scroll for so long. ;)

Other quick protein breakfast ideas

    I have loads of healthy breakfast recipes, especially if you’re looking for gluten-free or vegan options. The recipes below are all high in protein and make great options to start the day.

  • These Protein Pancakes get their nutritional boost from cottage cheese and Greek yogurt! Can easily be made gluten-free or whole grain. I love them with this Blueberry Sauce which would also be great on top off the overnight oats!

  • These Grain-free Protein Pancakes are loaded with protein from cottage cheese! They’re terrific to get extra protein in the mornings.

  • These Peanut Butter Protein Balls may not look like a full breakfast, but they’re great on the go! I often am running out the door, and these energy balls are packed with protein to get my day started. They’re super easy to make in 5 minutes and are naturally gluten-free, whole grain, dairy-free with a vegan option.

  • And some smoothies!

    Avocados are amongst the high-protein fruits, which is why these smoothies are a great way to perk up your day.

  • This Blueberry Avocado Smoothie is one of my favorite high-protein drinks. The avocado adds extra nutrition and makes smoothies rich and creamy! It’s easy to make paleo and vegan.

  • If you like citrus, this Banana Orange Avocado Smoothie is super delicious! It’s ultra thick and creamy, packed with protein, and can easily be made paleo or vegan.

  • For an extra treat, this Vietnamese Avocado Smoothie is super lush and can be made the traditional way with sweetened condensed milk or a healthier paleo vegan way with maple syrup and coconut milk.

If you make these Cinnamon Overnight Oats, leave me a comment below and let me know how they taste! You can find me by mentioning @texanerin or by tagging #texanerin.

Cinnamon Overnight Oats

Rated 5.0 by 5 readers
Cinnamon Overnight Oats (5 minutes prep!)
  • Prep Time:
  • Cook Time:
  • Ready in:
  • Yield: 1 serving

Read the notes if using lemon juice!


  • 1/2 cup (47 grams) rolled oats or quick oats for a smoother texture
  • 1/2 cup (120 ml) milk (dairy or non-dairy)
  • 2 tablespoons unflavored or vanilla protein powder or 1 tablespoon whole chia seeds OR omit and add less milk1
  • 3-4 teaspoons maple syrup
  • 1/2 teaspoon ground cinnamon
  • 1/2 teaspoon vanilla extract
  • pinch of salt
  • optional – splash of fresh lemon juice2


  1. Combine all of the ingredients (using 3 teaspoons maple syrup) in a small bowl or jar. Refrigerate for at least four hours, preferably overnight.
  2. When you're ready to eat it, taste and stir in more maple syrup, if desired. Unless you used sweetened protein powder, you'll probably need the extra maple. And if it tastes bland or if the flavor doesn't pop, you need to add more salt. Want them thinner? Add a little more milk. This recipe yields oats that are on the thicker side.
  3. If preparing in advance, don't add any toppings. Cover and refrigerate for up to 5 days, noting that the oats will become softer and softer the longer it sits.


  1. If not using protein powder or chia seeds, only use 6 tablespoons of milk if you like your oats thick. If you don't like them thick, then use the full 1/2 cup of milk.
  2. Adding lemon juice neutralizes the phytic acid, making it more digestible. For more details, check out my post on → Overnight Oats Benefits. If you want to do that, soak them for at least 12 hours. Ideally, you'd use slightly warm milk to soak the oats, let them soak at room temperature (or slightly warmer than room temperature, like a laundry room or in a sunny spot) for 4 hours. I'm too lazy to heat up the milk and use cold milk, put the bowl with the prepared oats on a cooling rack and put that over a burner that's still warm after making dinner. After 4 hours, move the oats to the refrigerator for the remaining 4+ hours. Don't forget to move them into the fridge after 4 hours, or else they might spoil and/or develop something undesirable.
  • If you're gluten-free, make sure to use gluten-free oats and gluten-free protein powder (most are).
  • If you're vegan, make sure to use plant-based milk and vegan protein powder.

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8 comments on “Cinnamon Overnight Oats (5 minutes prep!)” — Add one!

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  • Erin says
    July 31, 2022 @ 10:30 am

    This recipe was so easy and tasty! I was looking for a quick breakfast recipe and there it was! Overnight oats, I had no idea! I love a hot bowl of oatmeal, but these overnight oats are perfect for hot summer mornings! Thanks, I’ll be trying the overnight chocolate oats next!

    • Erin replies to Erin
      August 2, 2022 @ 12:42 pm

      I’m so glad that you enjoyed the oats! Thanks a bunch for your feedback. :) I hope you’ll enjoy the chocolate ones just as much!

  • Heidy
    June 2, 2022 @ 12:33 pm

    This Cinnamon Overnight Oats recipe was so easy and flavorful. Please don’t laugh, but this was the first time I made Overnight Oats. I have been missing out!

  • Hayley Dhanecha
    May 30, 2022 @ 11:43 am

    Love cinnamon in anything, so delicious and amazing! Can’t wait to make it again.

  • Uma
    May 30, 2022 @ 5:05 am

    I love overnight oats. this cinnamon overnight oat was very delicious and I made it with oat milk, turned out very yummy.

  • Allyssa
    May 28, 2022 @ 5:43 pm

    Super loved how this recipe, so flavorful especially the cinnamon! Loved it! Highly recommended!

  • Jere Cassidy says
    May 27, 2022 @ 7:24 pm

    I am just starting to make overnight oats and this recipe is super easy to make. I love just the cinnamon flavor. I don’t need a lot of toppings on my oats, so this was perfect for breakfast.

  • veenaazmanov
    May 27, 2022 @ 6:55 pm

    This sounds like a healthy Breakfast. Simple and yet so quick and easy.


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