Peanut Butter Cup Overnight Oats



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Peanut butter cup overnight oats that taste like you’re having dessert for breakfast! They’re delicious and perfect for meal prep.

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.

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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 

  • 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 – just a touch!
  • 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.

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.

How Long Do Overnight Oats Last?

When stored in an airtight container in the fridge overnight oats should last for up to 5 days. They will soften more the longer they sit so I find they’re best on days 1-3, but they’re still safe to eat on days 4 and 5. With this said, overnight oats are great for meal prep. Feel free to make a whole batch for the week on Sunday. I like prepping them in wide mouth 16 oz mason jars.

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

More Peanut Butter and Chocolate Recipes to Try:

More Oatmeal Recipes to Try:

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. 

4.08 from 55 votes

Peanut Butter Cup Overnight Oats

Breakfast and dessert in one! These peanut butter cup overnight oats are a delicious, filling breakfast that are on regular rotation in my house this summer.
Prep Time: 10 minutes
Soak Time: 1 hour
Total Time: 10 minutes
Servings: 1



  • Mix ingredients: 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.
  • Refrigerate: Seal container with a lid and place in the fridge overnight.
  • Remove from refrigerator: 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.
  • Serve: Top oats with chocolate chips and remaining peanut butter for serving.
  • Store: Overnight oats will keep for up to 5 days in the fridge in a sealed airtight container.



  • Chocolate chips – I like using Lily’s dark chocolate chips, but I’ve also made this recipe with a chopped up Lily’s peanut butter cup. It 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.
  • Chocolate protein powder – I use chocolate protein powder, but you could also use peanut butter protein powder.


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

Nutrition information is automatically calculated, so should only be used as an approximation.

Additional Info

Course: Breakfast
Cuisine: American
Keyword: peanut butter overnight oats
Did you make this recipe?Mention @eatingbirdfood and tag #eatingbirdfood!

More Overnight Oats Recipes:

About Brittany

Hey there, I’m Brittany, the creator of Eating Bird Food, cookbook author, health coach and mama of two littles. Here you’ll find quick and easy recipes that make healthy fun and enjoyable for you and your family!

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Recipe Rating


  1. 5 stars
    The perfect thing to have for the best meal of the day! So satisfying! I did not have chocolate protein powder, so I used half a scoop of plain protein powder and about 2 tsp of some chocolate spread stuff (I’ve also done this using cocoa powder). I did top with cocoa nibs instead of chocolate chips, and I would highly recommend because it adds such a satisfying crunch!

    1. Ah yay! I’m so glad this recipe was a hit, Madeline! Thanks so much for the review. I really appreciate it!

  2. 5 stars
    I tried this Peanut Butter Cup Overnight Oats, this is really yummy, My wife makes such mouth-watering Oats recipe that I just can’t wait to go over to my house tonight. Medintu is providing the best Nutritionist from various develop meal plans.

  3. 5 stars
    Soooo good! It seems like a classic flavor, which means you can never go wrong with it. Simple, yet filling and delicious. Be mindful if calorie intake is important for you, since it can be a bit high due to the peanut butter.
    Thank you so much for this recipe! I personally love it!

    1. WOO! I am so happy to hear that you are loving this recipe, Denisa. Thank you so much for sharing your review + star rating, I really appreciate it!

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