Peanut Butter Cup Overnight Oats

Breakfast and dessert in one! These peanut butter cup overnight oats combine chocolate and peanut butter for a delicious, filling breakfast that are on regular rotation in my house this summer.

Overnight oats will forever be my favorite summer breakfast. I love being able to throw breakfast together  the night before and wake up to a delicious, filling, chilled breakfast to enjoy!

I have so many recipes for overnight oats on Eating Bird Food — everything from strawberry overnight oats (that taste like strawberry shortcake) and chocolate banana overnight oats to zucchini bread overnight oats. That said, you can never have too many overnight oat recipes and recently I was inspired to create a new recipe using one of my favorite flavor combinations ever… peanut butter + chocolate.

Two glass jars filled with chocolate peanut butter cup overnight oats with chocolate chips and peanut butter on top. Gold spoon in a bowl of peanut butter.

Ingredients Needed for Peanut Butter Cup 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
  • chocolate protein powder – this is what gives the overnight oats their chocolatey flavor. I use a plant-based chocolate protein powder that is sweetened with stevia. If your protein powder isn’t sweetened, you’ll likely want to add a little sweetener, like maple syrup
  • almond milk – I like using unsweetened vanilla almond milk, but any type of milk will work
  • vanilla extract
  • 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. I’ve also made this recipe with a chopped up Lily’s peanut butter cup instead of the chocolate chips. If definitely takes the pb cup overnight oats to a whole new level!
  • peanut butter – I highly recommend using peanut butter for this recipe since it is peanut butter cup inspired, but if you want to swap it for a different nut butter, go right ahead

A white bowl filled with chocolate peanut butter overnight oats topped with peanut butter, chocolate chips and granola.

Overnight Oats Ratio

The base “recipe” for overnight oats is so simple! The hardest part is getting the right ratio of oats to liquid, but if you follow my recipes you’ll be set!

I aim for a 1:1 ratio of rolled oats to milk, plus half as much yogurt. So for 1 cup of oats, I use 1 cup of milk + 1/2 cup of yogurt (or an additional 1/2 cup of milk). For this recipe, I’m skipping the yogurt and using the extra milk. This seems to give the oats the perfect consistency, not too thick, but not soupy. For the liquid, I usually go for non-dairy milk like almond milk, but you can use whatever milk you have on hand and if you really want to experiment you can try using different liquids like fruit juice.

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.

Traveling with Overnight Oats

Overnight oats are such an awesome on-the-go option. They’re great for bringing to the office for a healthy breakfast and great for traveling as well!

They’re perfect for road trips, but I have also flown with overnight oats and they’ve always made it through security. If you are worried about them getting through, you could also prep overnight oats for travel by putting dry oats and any other perishable ingredients in a mason jar, and then add purchase milk once you’re through airport security. Add the milk to the jar and let it soak for 1-2 hours and enjoy! You can bring a little ice pack with you if you really want to, but it should be fine at room temp for a couple hours.  Just a little EBF travel hack for you. 😉

White bowl of chocolate peanut butter overnight oats with peanut butter, granola, peanuts and chocolate chips layered on top.

Love Everything Peanut Butter + Chocolate? Try These Recipes:

If you try these peanut butter cup overnight oats please leave a comment and star rating below. Your feedback makes my day and is super helpful for other EBF readers as well. 

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White bowl of chocolate peanut butter overnight oats with peanut butter, granola, peanuts and chocolate chips layered on top.

Peanut Butter Cup Overnight Oats

  • Author: Brittany Mullins
  • Prep Time: 8 hours
  • Total Time: 8 hours
  • Yield: 1
  • Diet: Vegetarian


Breakfast and dessert in one! These peanut butter cup protein overnight oats are a delicious, filling breakfast that are on regular rotation in my house this summer.


  • 1/2 cup uncooked old fashioned rolled oats
  • 1 scoop chocolate protein powder*
  • ¾  cup unsweetened vanilla almond milk (or other milk)
  • ½ teaspoon vanilla extract
  • pinch of sea salt
  • 1 Tablespoon chocolate chips (I use Lily’s dark chocolate chips)*
  • 12 Tablespoons peanut butter (divided)


  1. Add oats, protein powder, milk, vanilla, sea salt and ½ Tablespoon of peanut butter to a bowl or jar. Stir or shake well to combine, until all the protein powder has dissolved and peanut butter has disperse. Seal container with a lid and place in the fridge overnight.
  2. In the morning, remove bowl or jar from the fridge and stir/shake the mixture. You’ll notice that the oats soak up a lot of the liquid, so you may want to add a little more milk before serving.
  3. Top oats with chocolate chips and remaining peanut butter for serving.
  4. Overnight oats will keep for up to 5 days in the fridge in a sealed airtight container.


  • Chocolate protein powder works great in this recipe, but it’s also amazing with chocolate peanut butter protein if you have that.
  • I’ve also made this with a chopped up Lily’s peanut butter cup instead of the chocolate chips, which takes the pb cup overnight oats to a whole new level.
  • Category: Breakfast
  • Method: Soak
  • Cuisine: American


  • Serving Size: 1 bowl
  • Calories: 499
  • Sugar: 14g
  • Sodium: 239mg
  • Fat: 23g
  • Carbohydrates: 49g
  • Fiber: 9g
  • Protein: 30g

Keywords: peanut butter overnight oats

More Overnight Oats Recipes:

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Recipe rating

    1. Mender
      March 4, 2021 AT 7:40 am

      Can I use quick cooking rolled oats? Just checking because I have a big bag of those and don’t currently have old fashioned rolled oats.

      1. Brittany Mullins
        March 4, 2021 AT 12:34 pm

        Totally! Let me know how they turn out for you!

    2. Natalie
      July 16, 2020 AT 12:31 pm

      Great recipe and perfect for a sweet tooth!

      1. Brittany Mullins
        July 16, 2020 AT 4:17 pm

        Yay! Glad you enjoyed this recipe, Natalie. 🙂 Thanks for making it and for coming back to leave a comment + star rating. I appreciate it.

    3. Linley
      June 13, 2020 AT 6:17 pm

      I’m an eleven year old and I was bored at the house not doing much and decided to make dog treats,I found this recipe and made it and my dog LOVED them he kept on getting in the house so he could get another one!!!

    4. Katie
      June 1, 2020 AT 10:15 am

      This was my first attempt at making overnight oats and it was delicious and definitely made me want to try different recipes for overnight oats.

    5. Amber
      February 5, 2020 AT 11:20 am

      So yummy!!!

      1. Brittany Mullins
        February 5, 2020 AT 3:41 pm

        So glad you enjoyed these overnight oats, Amber!! Thanks for coming back to leave a comment + star rating. It means the world to me. <3

    6. Amanda
      June 17, 2019 AT 7:22 pm

      I made this yesterday for today’s breakfast which I had to eat on the go. I didn’t add chocolate chips (because I didn’t have them) and I didn’t add any additional PB or toppings because I ran out the door and forgot, but it was still delish! Tasted kind of like a dessert! It was a little more liquidy than other overnight oats recipes I’ve made, but I will definitely make it again!

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