Brownie Batter Overnight Oats

Treat yourself to these chocolate brownie batter overnight oats. They taste like brownies and are topped with walnuts, chocolate chips and a peanut butter drizzle.

What if I told you that you could eat chocolate for breakfast and keep it healthy? Would you think that I was joking or that you were in some sort of dreamland? Well, today my friend your dreams are becoming a reality because I’m making it happen with these brownie batter overnight oats.

If you’ve been reading EBF for awhile you’ll know that throughout the summer months I’m all about overnight oats. They’re cool, creamy and so easy. I love that I can whip up a batch before bed and wake up to a healthy and delicious breakfast without having to cook anything.

I’ve shared a bunch of dessert inspired overnight oat combos (like peanut butter cup overnight oats and chocolate banana overnight oats), but I think this brownie batter version is the most decadent.

Chocolate brownie batter overnight oats in a mason jar with a gold spoon. Topped with walnuts and chocolate chips.

Seriously, if you’re a brownie lover get excited because this combo is delicious and it was made for you!

Ingredients for brownie batter overnight oats in a white bowl before mixing.

Ingredients Needed for Brownie Overnight Oats

  • old fashioned rolled oats – rolled oats are the best for overnight oats. Instant/quick oats and steel cut oats don’t work the same because they don’t absorb liquid like rolled oats do.
  • almond milk – I like using unsweetened vanilla almond milk, but any type of milk will work
  • protein powder – I use a plant-based chocolate protein powder that is sweetened with stevia, but you can use your favorite protein powder
  • cocoa powder – this gives the oats their rich chocolate flavor and dark color
  • maple syrup – pure maple syrup is the perfect natural sweetener to use because it’s liquid so it blends in nicely with the oat mixture and I personally love the flavor. Honey or another natural liquid sweetener will work here. If you want to reduce the sugar in this recipe, feel free to use a sugar alternative like stevia or monk fruit
  • vanilla
  • sea salt – a pinch of sea salt is the perfect flavor enhancer and brings out the nutty flavor of the oats
  • chocolate chips – I like using Lily’s dark chocolate chips because they’re sugar-free and low in carbs
  • chopped walnuts – brownies are so good topped with walnuts and I love the crunch they add to these overnight oats
  • peanut butter – I love peanut butter on these oats, but any nut butter that you enjoy would work for this recipe

Overhead shot of chocolate brownie batter overnight oats in a mason jar. Topped with walnuts and chocolate chips.

How Long Do Overnight Oats Need to Soak?

Given the name, you’d assume overnight oats need to soak overnight, but you can actually make them in 2-4 hours if you’re in a rush. While it does take some time for the oats to absorb the liquid, they don’t necessarily have to be soaked overnight. I recommend at least 8 hours for true overnight oats, but there have been mornings where I decide I want overnight oats for breakfast even though I didn’t prep them the night before. When this happens I’ll make them the morning of and let the oats soak for just 2-4 hours. With this quick soak, they’re not as soft as overnight oats that have soaked longer and they’re a bit more liquidy, but they’re still delicious.

Can You Eat Overnight Oats Hot?

Short answer, yes! You can definitely warm up overnight oats, but the whole point of overnight oats is to eat them cold like muesli. Even if you think cold oats sound strange, I recommend giving it shot before you write them off. Of course, if you simply can’t do the cold oats you can always heat them up. Just pop the overnights oats in your microwave, cooking in 30 second increments until the oats are warm throughout and enjoy.

After letting your overnight oats soak overnight (or at least a few hours), take the oats out of the fridge and top with banana slices and cacao nibs.

Brownie batter overnight oats in a mason jar with a gold spoon. Topped with walnuts and chocolate chips.

While enjoying these you’ll feel like you’re being naughty by eating chocolate for breakfast (and you kind of are because there are chocolate chips involved) BUT the healthy stuff totally outweighs the chocolate. Plus chocolate does have some health benefits of its own. <– I’m all about the antioxidants… especially those from chocolate and wine. 🙂

More Oatmeal Recipes to Try:

If you make these brownie batter overnight oats please be sure to leave a comment and star rating below. Your feedback is super helpful for the EBF team and other readers who are thinking about making the recipe. 

clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon
Chocolate brownie batter overnight oats in a mason jar with a gold spoon. Topped with walnuts and chocolate chips.

Brownie Batter Overnight Oats

  • Author: Brittany Mullins
  • Prep Time: 8 hours
  • Total Time: 8 hours
  • Yield: 2
  • Diet: Vegetarian


Breakfast that tastes like brownie batter! Chocolate overnight oats topped with walnuts, chocolate chips and a peanut butter drizzle. They look and taste so decadent you won’t even realize you’re eating healthy.


  • 1 cup old fashioned rolled oats
  • 2 scoops protein powder (vanilla or chocolate)
  • 2 cups unsweetened vanilla almond milk
  • 2 Tablespoons cocoa powder
  • 1 Tablespoon maple syrup
  • 1 teaspoon vanilla
  • pinch of sea salt
  • 2 Tablespoons chocolate chips (I use Lily’s dark chocolate chips)
  • 2 Tablespoons chopped walnuts
  • 1 Tablespoon peanut butter (optional)


  1. Add oats, protein powder, almond milk, cocoa powder, maple syrup, vanilla and sea salt into a bowl or jar. Stir well to combine, until all the protein powder has dissolved. Seal container with a lid and place in the fridge overnight.
  2. Take the container out of the fridge the next morning and stir the mixture. You’ll notice that the oats soak up a lot of the liquid so you may want to add a little more almond milk before serving. Portion overnight oats into two containers, top each with chocolate chips, chopped walnuts and peanut butter, if using. Enjoy.


  • If you want to keep this recipe gluten-free and vegan, be sure to get gluten-free oats, vegan protein powder and vegan chocolate chips.
  • Category: Breakfast
  • Method: Soaking
  • Cuisine: American


  • Serving Size: 1 serving
  • Calories: 435
  • Sugar: 11g
  • Fat: 17g
  • Carbohydrates: 47g
  • Fiber: 10g
  • Protein: 30g

Keywords: brownie overnight oats

More Overnight Oats Recipes:

This post may include affiliate links. Thank you for your support.

Leave a Comment

Your email address will not be published. Required fields are marked *

Recipe rating

    1. herbal products
      April 8, 2021 AT 2:18 am

      Hi thanks for this brown oats , i am going to try this , your website is inspiration

      1. Brittany Mullins
        April 8, 2021 AT 7:40 pm

        Let me know how they turn out 🙂

    2. Jillian
      April 1, 2021 AT 7:02 pm

      I tried to make these and they came out liquid. I didn’t change anything at all either. I even added another half cup of oats trying to thicken it. I made it in a big bowl, does that matter?

      1. Brittany Mullins
        April 1, 2021 AT 7:34 pm

        That shouldn’t matter. How long did you let the oats sit for and did you use rolled oats?

        1. Jillian Lutz
          April 3, 2021 AT 5:59 pm

          I let them sit from 6pm to 9am the next day, and I used regular rolled oats not instant.

          1. Brittany Mullins
            April 3, 2021 AT 11:13 pm

            Mmm, interesting! They shouldn’t have been liquidy. What milk did you end up using?

            1. Jillian
              April 4, 2021 AT 8:13 pm

              I used unsweetened vanilla almond milk.

    3. Tara J Sabol
      February 13, 2021 AT 12:51 pm

      Once you leave the mixture in the refrigerator and take it out the next day, is the mixture supposed to be liquidity? Or is it supposed to be thickened? Mine came out liquidity.

      1. Brittany Mullins
        February 13, 2021 AT 10:04 pm

        Hey Tara – It’s supposed to thicken up overnight and shouldn’t be too liquidy. Did you change anything about the recipe?

    4. Kylie
      February 8, 2021 AT 9:24 am

      I’m interested to know what cocoa powder you use?
      I have cacao powder at home, if I use that instead will it make it too bitter?
      Same goes for all the recipes you use cocoa powder in….

      1. Brittany Mullins
        February 8, 2021 AT 8:14 pm

        You can use cacao! It’ll work the same as using cocoa powder. 🙂

    5. Heather Astaneh
      January 27, 2021 AT 4:28 pm

      Thank you so much for posting the calories for this! I’m in the middle of trying to lose a few pounds and I’m in the counting calories part of that. It’s nice to know there are delicious things out there I can eat! 😀

    6. Bailey
      September 15, 2020 AT 1:03 pm

      I normally hate overnight oats. Something about them and their texture makes me want to gag- but these WOW! Absolutely delicious. I don’t have a single bad thing to say about them! These will be a staple on my busy mornings

      1. Brittany Mullins
        September 15, 2020 AT 2:48 pm

        Ahh yay, that makes me so happy to hear, Bailey. 🙂 I’m so glad you loved these overnight oats. Thanks so much for making them and for coming back to leave a comment + star rating. I so appreciate it!

    7. Michelle
      April 15, 2019 AT 9:30 pm

      Would this recipe work the same way if you sub the almond milk with Skim milk? Thanks

      1. Brittany Mullins
        April 15, 2019 AT 9:34 pm

        Definitely. Let me know if you try it. 🙂

    8. bari
      September 17, 2018 AT 9:22 pm

      How could you incorporate a banana?.please and thank you

    9. Betty Norris
      March 30, 2018 AT 11:25 pm

      How many weight watchers points would one serving be?

      1. Brittany Mullins
        March 31, 2018 AT 11:48 am

        Hi Betty. I’m not very familiar with Weight Watcher’s points system so I’m actually not sure! Sorry about that.

    10. Jen
      January 25, 2018 AT 7:38 am

      Hey, just a question about the calories- is the 435 for the entire preparation or for after your divide it into two servings? Thanks!

      1. Brittany Mullins
        January 25, 2018 AT 10:51 am

        Hi Jen. The nutrition data is for one serving and there are two servings in the recipe.

    11. Katrina
      August 20, 2017 AT 10:18 pm

      This was my first overnight oat recipe to try and it was a winner! These brownie batter oats were so good! Loved them.

    12. Deb
      June 23, 2017 AT 6:07 pm

      Would it be crazy to throw this all in the blender and drink as a smoothie? I’m typically not a fan of the texture of oatmeal, but I really want to try this!

    13. Jonnie
      March 23, 2017 AT 10:39 pm

      Hello I love your recipes! I would love to use this in a roundup on my blog. With your permission ofcourse!

    14. Michelle H
      February 3, 2017 AT 10:14 am

      My new favorite breakfast! So easy to throw together the night before and sooooo delicious!

      1. Brittany Mullins
        February 4, 2017 AT 2:46 pm

        Yay!! I’m so glad you like this recipe, Michelle. It’s one of my favorites too!

    15. TS
      January 26, 2017 AT 9:27 pm

      Hi, do you microwave this in the morning (or could you), or do you eat it cold right out of the fridge? Thanks 🙂

      1. Brittany Mullins
        January 26, 2017 AT 9:39 pm

        I think most people eat overnight oats cold straight from the fridge in the morning, but you could certainly microwave them if you don’t enjoy them cold! 🙂

    16. Kathleen
      January 7, 2017 AT 2:41 pm

      OMG!!!We love overnight oats and smoothie bowls and smoothies for breakfast and yesterday we picked up our groceries so we wouldn’t need to go on the weekend BUT I am so going to make a run for cocoa powder as I can hardly wait until tomorrow morning!????
      We enjoy so many of your recipes and ideas and appreciate all the time and effort you put into this. Bless you and Happy Healthy 2017. ????

    17. mia
      June 4, 2016 AT 12:18 am

      Sounds so delicious! I love PB so i mayyyyy have to add a little more 😀 I also have PB powder so not sure whether to use that or cottage cheese or greek yogurt.. I enjoy them all just as much so I’m debating which to use! they all sound so delish!

      1. Brittany Mullins
        June 5, 2016 AT 1:56 pm

        Hi Mia. I’m a PB lover as well so I’m all for adding more! And feel free to play around with using cottage cheese, Greek yogurt or peanut butter powder. I’m sure you’ll find a combo that you love. You really can’t go wrong with any of those things!

    18. Laura
      May 21, 2016 AT 12:10 pm

      I’ve been looking for something delicious I can just grab in the mornings to take to work, since using the blender for smoothies wakes my fiancé up. This sounds like just the thing for me to try next week – chocolate for breakfast on Monday!

    19. alexandracaspero
      May 17, 2016 AT 9:45 pm

      Brownies for breakfast!? Sounds amazing! Love this overnight oats idea, gorgeous photos!

      1. Brittany Mullins
        May 19, 2016 AT 9:22 am

        Thank you, Alexandra. 🙂

    20. Marye Audet-White
      May 17, 2016 AT 2:07 pm

      I am not usually a big fan of oatmeal, but this looks amazing!

      1. Brittany Mullins
        May 19, 2016 AT 9:22 am

        Thanks Marye. I think this recipe could convent even those who aren’t big oatmeal fans. 🙂

    21. shashi at runninsrilankan
      May 17, 2016 AT 12:28 pm

      I adore healthy treats that masquerade as naughty ones – and these look especially naughty!

    22. amindfullmom
      May 17, 2016 AT 8:08 am

      Pretty sure even my husband who hates mornings, would happily wake up for these 🙂

      1. Brittany Mullins
        May 17, 2016 AT 9:17 am

        haha. I bet so too!!

    23. Catherine
      May 17, 2016 AT 8:02 am

      Dear Brittany, this takes oatmeal to a whole new level! What a treat…chocolate in the morning is something I can get behind. xo, Catherine

    24. Glenda
      May 16, 2016 AT 5:02 pm

      Looks delicious! Do you think it would work without the protein powder?

      1. Brittany Mullins
        May 17, 2016 AT 9:26 am

        Totally! I’d probably use less almond milk if you’re totally skipping the protein powder. Maybe use 1 1/2 cups instead of 2. If you still want to add a little extra protein you can do Greek yogurt, hemp seeds, chia seeds, flaxseed or something similar. 🙂

    25. Carly @ Littleladynibbles
      May 16, 2016 AT 2:41 pm

      Delicious! I’ve been craving overnight oats lately and this is the perfect way to satisfy

Subscribe + get eating!

Grab your Free 3 Day Clean Eating Meal Plan

Subscribe to our list and get your free printable PDF of the 3 Day Clean Eating Meal Plan and Shopping List!

Parchment paper lined with protein balls.


Eating healthy doesn’t have to be boring!